56518661760 has 256 divisors, whose sum is σ = 205077381120. Its totient is φ = 13105664000.

The previous prime is 56518661687. The next prime is 56518661761. The reversal of 56518661760 is 6716681565.

It is not an unprimeable number, because it can be changed into a prime (56518661761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427585 + ... + 543935.

It is an arithmetic number, because the mean of its divisors is an integer number (801083520).

Almost surely, 2^56518661760 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 56518661760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102538690560).

56518661760 is an abundant number, since it is smaller than the sum of its proper divisors (148558719360).

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

56518661760 is a wasteful number, since it uses less digits than its factorization.

56518661760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116407 (or 116395 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 56518661760 in words is "fifty-six billion, five hundred eighteen million, six hundred sixty-one thousand, seven hundred sixty".