12687554232 has 40 divisors (see below), whose sum is σ = 35536901400. Its totient is φ = 4229184528.

The previous prime is 12687554219. The next prime is 12687554339. The reversal of 12687554232 is 23245578621.

12687554232 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 75 + 542 + 32 = 666.

It is a super-2 number, since 2×12687554232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9789132 + ... + 9790427.

It is an arithmetic number, because the mean of its divisors is an integer number (888422535).

Almost surely, 2^12687554232 is an apocalyptic number.

12687554232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12687554232 is an abundant number, since it is smaller than the sum of its proper divisors (22849347168).

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

12687554232 is a wasteful number, since it uses less digits than its factorization.

12687554232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19579577 (or 19579564 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 12687554232 in words is "twelve billion, six hundred eighty-seven million, five hundred fifty-four thousand, two hundred thirty-two".