56540785640 has 64 divisors (see below), whose sum is σ = 128167650000. Its totient is φ = 22447503360.

The previous prime is 56540785601. The next prime is 56540785643. The reversal of 56540785640 is 4658704565.

It can be written as a sum of positive squares in 8 ways, for example, as 662444644 + 55878340996 = 25738^2 + 236386^2 .

It is not an unprimeable number, because it can be changed into a prime (56540785643) 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, 10373636 + ... + 10379084.

Almost surely, 2^56540785640 is an apocalyptic number.

It is an amenable number.

56540785640 is an abundant number, since it is smaller than the sum of its proper divisors (71626864360).

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

56540785640 is a wasteful number, since it uses less digits than its factorization.

56540785640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350 (or 7346 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 56540785640 in words is "fifty-six billion, five hundred forty million, seven hundred eighty-five thousand, six hundred forty".