12407520656 has 20 divisors (see below), whose sum is σ = 24598632432. Its totient is φ = 6059486496.

The previous prime is 12407520649. The next prime is 12407520709. The reversal of 12407520656 is 65602570421.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9016406 + ... + 9017781.

Almost surely, 2^12407520656 is an apocalyptic number.

12407520656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12407520656 is a deficient number, since it is larger than the sum of its proper divisors (12191111776).

12407520656 is a wasteful number, since it uses less digits than its factorization.

12407520656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034238 (or 18034232 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 12407520656 in words is "twelve billion, four hundred seven million, five hundred twenty thousand, six hundred fifty-six".