56646454640425 has 24 divisors (see below), whose sum is σ = 75662467542144. Its totient is φ = 41821460208960.

The previous prime is 56646454640423. The next prime is 56646454640453. The reversal of 56646454640425 is 52404645464665.

It is not a de Polignac number, because 56646454640425 - 2¹ = 56646454640423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56646454640423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18955537 + ... + 21739486.

It is an arithmetic number, because the mean of its divisors is an integer number (3152602814256).

Almost surely, 2^{56646454640425} is an apocalyptic number.

It is an amenable number.

56646454640425 is a deficient number, since it is larger than the sum of its proper divisors (19016012901719).

56646454640425 is a wasteful number, since it uses less digits than its factorization.

56646454640425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40699329 (or 40699324 counting only the distinct ones).

The product of its (nonzero) digits is 331776000, while the sum is 61.

The spelling of 56646454640425 in words is "fifty-six trillion, six hundred forty-six billion, four hundred fifty-four million, six hundred forty thousand, four hundred twenty-five".