53517720416656 has 40 divisors (see below), whose sum is σ = 103851299591424. Its totient is φ = 26717405938560.

The previous prime is 53517720416623. The next prime is 53517720416687. The reversal of 53517720416656 is 65661402771535.

It is a self number, because there is not a number n which added to its sum of digits gives 53517720416656.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40443846 + ... + 41746138.

Almost surely, 2^{53517720416656} is an apocalyptic number.

It is an amenable number.

53517720416656 is a deficient number, since it is larger than the sum of its proper divisors (50333579174768).

53517720416656 is a wasteful number, since it uses less digits than its factorization.

53517720416656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306279 (or 1306273 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 58.

The spelling of 53517720416656 in words is "fifty-three trillion, five hundred seventeen billion, seven hundred twenty million, four hundred sixteen thousand, six hundred fifty-six".