12634357056 has 56 divisors (see below), whose sum is σ = 34881824064. Its totient is φ = 4028344320.

The previous prime is 12634357039. The next prime is 12634357067. The reversal of 12634357056 is 65075343621.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12634356999 and 12634357017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426105 + ... + 1434936.

Almost surely, 2^12634357056 is an apocalyptic number.

12634357056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12634357056 is an abundant number, since it is smaller than the sum of its proper divisors (22247467008).

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

12634357056 is a wasteful number, since it uses less digits than its factorization.

12634357056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861079 (or 2861069 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 12634357056 in words is "twelve billion, six hundred thirty-four million, three hundred fifty-seven thousand, fifty-six".