56384166637 has 4 divisors (see below), whose sum is σ = 56384642016. Its totient is φ = 56383691260.

The previous prime is 56384166607. The next prime is 56384166659. The reversal of 56384166637 is 73666148365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56384166637 - 2³⁵ = 22024428269 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 (56384166607) 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, 102978 + ... + 351244.

It is an arithmetic number, because the mean of its divisors is an integer number (14096160504).

Almost surely, 2^56384166637 is an apocalyptic number.

It is an amenable number.

56384166637 is a deficient number, since it is larger than the sum of its proper divisors (475379).

56384166637 is a wasteful number, since it uses less digits than its factorization.

56384166637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475378.

The product of its digits is 13063680, while the sum is 55.

The spelling of 56384166637 in words is "fifty-six billion, three hundred eighty-four million, one hundred sixty-six thousand, six hundred thirty-seven".