56978726187 has 16 divisors (see below), whose sum is σ = 76278901248. Its totient is φ = 37832255040.

The previous prime is 56978726177. The next prime is 56978726197. The reversal of 56978726187 is 78162787965.

It is an interprime number because it is at equal distance from previous prime (56978726177) and next prime (56978726197).

It is not a de Polignac number, because 56978726187 - 2¹⁸ = 56978464043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56978726177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5354362 + ... + 5364992.

It is an arithmetic number, because the mean of its divisors is an integer number (4767431328).

Almost surely, 2^56978726187 is an apocalyptic number.

56978726187 is a deficient number, since it is larger than the sum of its proper divisors (19300175061).

56978726187 is a wasteful number, since it uses less digits than its factorization.

56978726187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17690.

The product of its digits is 71124480, while the sum is 66.

The spelling of 56978726187 in words is "fifty-six billion, nine hundred seventy-eight million, seven hundred twenty-six thousand, one hundred eighty-seven".