56388016073 has 4 divisors (see below), whose sum is σ = 57699365328. Its totient is φ = 55076666820.

The previous prime is 56388016067. The next prime is 56388016093. The reversal of 56388016073 is 37061088365.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 56388016073 - 2²⁴ = 56371238857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56388016093) 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, 655674563 + ... + 655674648.

It is an arithmetic number, because the mean of its divisors is an integer number (14424841332).

Almost surely, 2^56388016073 is an apocalyptic number.

It is an amenable number.

56388016073 is a deficient number, since it is larger than the sum of its proper divisors (1311349255).

56388016073 is a wasteful number, since it uses less digits than its factorization.

56388016073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311349254.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 56388016073 in words is "fifty-six billion, three hundred eighty-eight million, sixteen thousand, seventy-three".