12920862458056 has 64 divisors (see below), whose sum is σ = 28640378880000. Its totient is φ = 5347695055680.

The previous prime is 12920862458039. The next prime is 12920862458057. The reversal of 12920862458056 is 65085426802921.

It is not an unprimeable number, because it can be changed into a prime (12920862458057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6937656 + ... + 8600743.

It is an arithmetic number, because the mean of its divisors is an integer number (447505920000).

Almost surely, 2^{12920862458056} is an apocalyptic number.

It is an amenable number.

12920862458056 is an abundant number, since it is smaller than the sum of its proper divisors (15719516421944).

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

12920862458056 is a wasteful number, since it uses less digits than its factorization.

12920862458056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15538922 (or 15538918 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 58.

The spelling of 12920862458056 in words is "twelve trillion, nine hundred twenty billion, eight hundred sixty-two million, four hundred fifty-eight thousand, fifty-six".