56909302787 has 4 divisors (see below), whose sum is σ = 56910908400. Its totient is φ = 56907697176.

The previous prime is 56909302757. The next prime is 56909302831. The reversal of 56909302787 is 78720390965.

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 56909302787 - 2¹⁰ = 56909301763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56909302757) 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, 748412 + ... + 820937.

It is an arithmetic number, because the mean of its divisors is an integer number (14227727100).

Almost surely, 2^56909302787 is an apocalyptic number.

56909302787 is a deficient number, since it is larger than the sum of its proper divisors (1605613).

56909302787 is a wasteful number, since it uses less digits than its factorization.

56909302787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605612.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 56909302787 in words is "fifty-six billion, nine hundred nine million, three hundred two thousand, seven hundred eighty-seven".