56646425157 has 24 divisors (see below), whose sum is σ = 87903909792. Its totient is φ = 32353120800.

The previous prime is 56646425149. The next prime is 56646425167. The reversal of 56646425157 is 75152464665.

It is not a de Polignac number, because 56646425157 - 2³ = 56646425149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56646425107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199807 + ... + 391427.

It is an arithmetic number, because the mean of its divisors is an integer number (3662662908).

Almost surely, 2^56646425157 is an apocalyptic number.

It is an amenable number.

56646425157 is a deficient number, since it is larger than the sum of its proper divisors (31257484635).

56646425157 is a wasteful number, since it uses less digits than its factorization.

56646425157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193649 (or 193642 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 51.

The spelling of 56646425157 in words is "fifty-six billion, six hundred forty-six million, four hundred twenty-five thousand, one hundred fifty-seven".