56620216761 has 16 divisors (see below), whose sum is σ = 78892898304. Its totient is φ = 36084528144.

The previous prime is 56620216729. The next prime is 56620216789. The reversal of 56620216761 is 16761202665.

It is not a de Polignac number, because 56620216761 - 2⁵ = 56620216729 is a prime.

It is a super-2 number, since 2×56620216761² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56620216721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4663261 + ... + 4675386.

It is an arithmetic number, because the mean of its divisors is an integer number (4930806144).

Almost surely, 2^56620216761 is an apocalyptic number.

It is an amenable number.

56620216761 is a deficient number, since it is larger than the sum of its proper divisors (22272681543).

56620216761 is a wasteful number, since it uses less digits than its factorization.

56620216761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338740.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 56620216761 in words is "fifty-six billion, six hundred twenty million, two hundred sixteen thousand, seven hundred sixty-one".