56818436687 has 4 divisors (see below), whose sum is σ = 57003513336. Its totient is φ = 56633360040.

The previous prime is 56818436683. The next prime is 56818436729. The reversal of 56818436687 is 78663481865.

56818436687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56818436687 - 2² = 56818436683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56818436681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92537864 + ... + 92538477.

It is an arithmetic number, because the mean of its divisors is an integer number (14250878334).

Almost surely, 2^56818436687 is an apocalyptic number.

56818436687 is a deficient number, since it is larger than the sum of its proper divisors (185076649).

56818436687 is a wasteful number, since it uses less digits than its factorization.

56818436687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185076648.

The product of its digits is 46448640, while the sum is 62.

The spelling of 56818436687 in words is "fifty-six billion, eight hundred eighteen million, four hundred thirty-six thousand, six hundred eighty-seven".