56518303240 has 384 divisors, whose sum is σ = 156372249600. Its totient is φ = 18316247040.

The previous prime is 56518303223. The next prime is 56518303243. The reversal of 56518303240 is 4230381565.

It is a super-2 number, since 2×56518303240² (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 56518303240.

It is not an unprimeable number, because it can be changed into a prime (56518303243) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 582662872 + ... + 582662968.

It is an arithmetic number, because the mean of its divisors is an integer number (407219400).

Almost surely, 2^56518303240 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 56518303240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78186124800).

56518303240 is an abundant number, since it is smaller than the sum of its proper divisors (99853946360).

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

56518303240 is a wasteful number, since it uses less digits than its factorization.

56518303240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 56518303240 in words is "fifty-six billion, five hundred eighteen million, three hundred three thousand, two hundred forty".