56617397044 has 48 divisors (see below), whose sum is σ = 110631870720. Its totient is φ = 25172784000.

The previous prime is 56617397033. The next prime is 56617397047. The reversal of 56617397044 is 44079371665.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 56617396982 and 56617397000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56617397047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 625669 + ... + 710419.

It is an arithmetic number, because the mean of its divisors is an integer number (2304830640).

Almost surely, 2^56617397044 is an apocalyptic number.

It is an amenable number.

56617397044 is a deficient number, since it is larger than the sum of its proper divisors (54014473676).

56617397044 is a wasteful number, since it uses less digits than its factorization.

56617397044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85240 (or 85238 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 56617397044 in words is "fifty-six billion, six hundred seventeen million, three hundred ninety-seven thousand, forty-four".