56636351940 has 48 divisors (see below), whose sum is σ = 181236327552. Its totient is φ = 12945451776.

The previous prime is 56636351939. The next prime is 56636351957. The reversal of 56636351940 is 4915363665.

56636351940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56636351940² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56636351940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67423809 + ... + 67424648.

It is an arithmetic number, because the mean of its divisors is an integer number (3775756824).

Almost surely, 2^56636351940 is an apocalyptic number.

It is an amenable number.

56636351940 is an abundant number, since it is smaller than the sum of its proper divisors (124599975612).

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

56636351940 is a wasteful number, since it uses less digits than its factorization.

56636351940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134848476 (or 134848474 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 48.

The spelling of 56636351940 in words is "fifty-six billion, six hundred thirty-six million, three hundred fifty-one thousand, nine hundred forty".