56637176640 has 336 divisors, whose sum is σ = 199027328640. Its totient is φ = 13635072000.

The previous prime is 56637176593. The next prime is 56637176641. The reversal of 56637176640 is 4667173665.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56637176641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17538546 + ... + 17541774.

It is an arithmetic number, because the mean of its divisors is an integer number (592343240).

Almost surely, 2^56637176640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56637176640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99513664320).

56637176640 is an abundant number, since it is smaller than the sum of its proper divisors (142390152000).

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

56637176640 is a wasteful number, since it uses less digits than its factorization.

56637176640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 56637176640 in words is "fifty-six billion, six hundred thirty-seven million, one hundred seventy-six thousand, six hundred forty".