78316978759 has 32 divisors (see below), whose sum is σ = 84344094720. Its totient is φ = 72546531552.

The previous prime is 78316978757. The next prime is 78316978771. The reversal of 78316978759 is 95787961387.

It is not a de Polignac number, because 78316978759 - 2¹ = 78316978757 is a prime.

It is a super-2 number, since 2×78316978759² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78316978757) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43923382 + ... + 43925164.

It is an arithmetic number, because the mean of its divisors is an integer number (2635752960).

Almost surely, 2^78316978759 is an apocalyptic number.

78316978759 is a deficient number, since it is larger than the sum of its proper divisors (6027115961).

78316978759 is a wasteful number, since it uses less digits than its factorization.

78316978759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259.

The product of its digits is 160030080, while the sum is 70.

The spelling of 78316978759 in words is "seventy-eight billion, three hundred sixteen million, nine hundred seventy-eight thousand, seven hundred fifty-nine".