78944871051 has 16 divisors (see below), whose sum is σ = 117292425600. Its totient is φ = 52478236584.

The previous prime is 78944871043. The next prime is 78944871053. The reversal of 78944871051 is 15017844987.

78944871051 is a `hidden beast` number, since 7 + 89 + 448 + 71 + 0 + 51 = 666.

It is not a de Polignac number, because 78944871051 - 2³ = 78944871043 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78944871053) 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, 4203721 + ... + 4222458.

It is an arithmetic number, because the mean of its divisors is an integer number (7330776600).

Almost surely, 2^78944871051 is an apocalyptic number.

78944871051 is a deficient number, since it is larger than the sum of its proper divisors (38347554549).

78944871051 is a wasteful number, since it uses less digits than its factorization.

78944871051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8426535 (or 8426529 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The spelling of 78944871051 in words is "seventy-eight billion, nine hundred forty-four million, eight hundred seventy-one thousand, fifty-one".