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12255331055 = 511446349927
BaseRepresentation
bin10110110100111100…
…11000001011101111
31011122002120022201012
423122132120023233
5200044331043210
65344030135435
7612461411102
oct133236301357
934562508635
1012255331055
1152198a6680
12246035157b
1312040228a6
148438c4739
154bada9305
hex2da7982ef

12255331055 has 16 divisors (see below), whose sum is σ = 16047258624. Its totient is φ = 8910792480.

The previous prime is 12255331007. The next prime is 12255331073. The reversal of 12255331055 is 55013355221.

It is not a de Polignac number, because 12255331055 - 218 = 12255068911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220502 + ... + 270428.

It is an arithmetic number, because the mean of its divisors is an integer number (1002953664).

Almost surely, 212255331055 is an apocalyptic number.

12255331055 is a deficient number, since it is larger than the sum of its proper divisors (3791927569).

12255331055 is a wasteful number, since it uses less digits than its factorization.

12255331055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54406.

The product of its (nonzero) digits is 22500, while the sum is 32.

Adding to 12255331055 its reverse (55013355221), we get a palindrome (67268686276).

The spelling of 12255331055 in words is "twelve billion, two hundred fifty-five million, three hundred thirty-one thousand, fifty-five".

Divisors: 1 5 11 55 4463 22315 49093 49927 245465 249635 549197 2745985 222824201 1114121005 2451066211 12255331055