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12722468847 = 3111297297247
BaseRepresentation
bin10111101100101000…
…10111011111101111
31012211122120101021220
423312110113133233
5202023423000342
65502234354423
7630163125624
oct136624273757
935748511256
1012722468847
115439558170
12257088ba13
131279a3cc9a
1488996434b
154e6dd05ec
hex2f65177ef

12722468847 has 16 divisors (see below), whose sum is σ = 18519739392. Its totient is φ = 7704616320.

The previous prime is 12722468839. The next prime is 12722468893. The reversal of 12722468847 is 74886422721.

It is not a de Polignac number, because 12722468847 - 23 = 12722468839 is a prime.

It is a super-2 number, since 2×127224688472 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12722468847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722468897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105823 + ... + 191424.

It is an arithmetic number, because the mean of its divisors is an integer number (1157483712).

Almost surely, 212722468847 is an apocalyptic number.

12722468847 is a deficient number, since it is larger than the sum of its proper divisors (5797270545).

12722468847 is a wasteful number, since it uses less digits than its factorization.

12722468847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298558.

The product of its digits is 2408448, while the sum is 51.

The spelling of 12722468847 in words is "twelve billion, seven hundred twenty-two million, four hundred sixty-eight thousand, eight hundred forty-seven".

Divisors: 1 3 11 33 1297 3891 14267 42801 297247 891741 3269717 9809151 385529359 1156588077 4240822949 12722468847