56817349040 has 20 divisors (see below), whose sum is σ = 132100336704. Its totient is φ = 22726939584.

The previous prime is 56817349021. The next prime is 56817349091. The reversal of 56817349040 is 4094371865.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×56817349040² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 355108352 + ... + 355108511.

Almost surely, 2^56817349040 is an apocalyptic number.

It is an amenable number.

56817349040 is an abundant number, since it is smaller than the sum of its proper divisors (75282987664).

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

56817349040 is a wasteful number, since it uses less digits than its factorization.

56817349040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710216876 (or 710216870 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 56817349040 in words is "fifty-six billion, eight hundred seventeen million, three hundred forty-nine thousand, forty".