56474962640 has 20 divisors (see below), whose sum is σ = 131304288324. Its totient is φ = 22589985024.

The previous prime is 56474962637. The next prime is 56474962651. The reversal of 56474962640 is 4626947465.

It can be written as a sum of positive squares in 2 ways, for example, as 36682974784 + 19791987856 = 191528^2 + 140684^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352968437 + ... + 352968596.

Almost surely, 2^56474962640 is an apocalyptic number.

It is an amenable number.

56474962640 is an abundant number, since it is smaller than the sum of its proper divisors (74829325684).

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

56474962640 is a wasteful number, since it uses less digits than its factorization.

56474962640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705937046 (or 705937040 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 56474962640 in words is "fifty-six billion, four hundred seventy-four million, nine hundred sixty-two thousand, six hundred forty".