56716668540 has 288 divisors, whose sum is σ = 208523427840. Its totient is φ = 12181321728.

The previous prime is 56716668517. The next prime is 56716668559. The reversal of 56716668540 is 4586661765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15827589 + ... + 15831171.

It is an arithmetic number, because the mean of its divisors is an integer number (724039680).

Almost surely, 2^56716668540 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 56716668540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104261713920).

56716668540 is an abundant number, since it is smaller than the sum of its proper divisors (151806759300).

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

56716668540 is a wasteful number, since it uses less digits than its factorization.

56716668540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 56716668540 in words is "fifty-six billion, seven hundred sixteen million, six hundred sixty-eight thousand, five hundred forty".