78872440563 has 12 divisors (see below), whose sum is σ = 130202124208. Its totient is φ = 45069966000.

The previous prime is 78872440561. The next prime is 78872440579. The reversal of 78872440563 is 36504427887.

78872440563 is a `hidden beast` number, since 7 + 8 + 8 + 72 + 4 + 4 + 0 + 563 = 666.

It is not a de Polignac number, because 78872440563 - 2¹ = 78872440561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78872440561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 625971688 + ... + 625971813.

Almost surely, 2^78872440563 is an apocalyptic number.

78872440563 is a deficient number, since it is larger than the sum of its proper divisors (51329683645).

78872440563 is a wasteful number, since it uses less digits than its factorization.

78872440563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251943514 (or 1251943511 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 78872440563 in words is "seventy-eight billion, eight hundred seventy-two million, four hundred forty thousand, five hundred sixty-three".