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12620052720372 = 223233712011028981
BaseRepresentation
bin1011011110100101010111…
…0000100110101011110100
31122200110120011122220021210
42313221111300212223310
53123231331444022442
642501323331441420
72441524446122106
oct267512560465364
948613504586253
1012620052720372
114026152835a79
1214b9a26156270
137070b19233b6
14318b5714d576
1516d42347019c
hexb7a55c26af4

12620052720372 has 96 divisors (see below), whose sum is σ = 31583853391104. Its totient is φ = 3911770368000.

The previous prime is 12620052720337. The next prime is 12620052720377. The reversal of 12620052720372 is 27302725002621.

It is a self number, because there is not a number n which added to its sum of digits gives 12620052720372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620052720377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11750122 + ... + 12779102.

It is an arithmetic number, because the mean of its divisors is an integer number (328998472824).

Almost surely, 212620052720372 is an apocalyptic number.

12620052720372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12620052720372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15791926695552).

12620052720372 is an abundant number, since it is smaller than the sum of its proper divisors (18963800670732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12620052720372 is a wasteful number, since it uses less digits than its factorization.

12620052720372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030249 (or 1030247 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

Adding to 12620052720372 its reverse (27302725002621), we get a palindrome (39922777722993).

The spelling of 12620052720372 in words is "twelve trillion, six hundred twenty billion, fifty-two million, seven hundred twenty thousand, three hundred seventy-two".

Divisors: 1 2 3 4 6 12 23 37 46 69 74 92 111 138 148 222 276 444 851 1201 1702 2402 2553 3404 3603 4804 5106 7206 10212 14412 27623 44437 55246 82869 88874 110492 133311 165738 177748 266622 331476 533244 1022051 1028981 2044102 2057962 3066153 3086943 4088204 4115924 6132306 6173886 12264612 12347772 23666563 38072297 47333126 70999689 76144594 94666252 114216891 141999378 152289188 228433782 283998756 456867564 875662831 1235806181 1751325662 2471612362 2626988493 3502651324 3707418543 4943224724 5253976986 7414837086 10507953972 14829674172 28423542163 45724828697 56847084326 85270626489 91449657394 113694168652 137174486091 170541252978 182899314788 274348972182 341082505956 548697944364 1051671060031 2103342120062 3155013180093 4206684240124 6310026360186 12620052720372