56658437861 has 16 divisors (see below), whose sum is σ = 57274439040. Its totient is φ = 56046513600.

The previous prime is 56658437851. The next prime is 56658437867. The reversal of 56658437861 is 16873485665.

56658437861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56658437861 - 2²² = 56654243557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56658437861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56658437867) 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, 44367755 + ... + 44369031.

It is an arithmetic number, because the mean of its divisors is an integer number (3579652440).

Almost surely, 2^56658437861 is an apocalyptic number.

It is an amenable number.

56658437861 is a deficient number, since it is larger than the sum of its proper divisors (616001179).

56658437861 is a wasteful number, since it uses less digits than its factorization.

56658437861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524.

The product of its digits is 29030400, while the sum is 59.

The spelling of 56658437861 in words is "fifty-six billion, six hundred fifty-eight million, four hundred thirty-seven thousand, eight hundred sixty-one".