79157388678 has 16 divisors (see below), whose sum is σ = 158331571776. Its totient is φ = 26382997160.

The previous prime is 79157388623. The next prime is 79157388679. The reversal of 79157388678 is 87688375197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79157388679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638076 + ... + 751967.

It is an arithmetic number, because the mean of its divisors is an integer number (9895723236).

Almost surely, 2^79157388678 is an apocalyptic number.

79157388678 is an abundant number, since it is smaller than the sum of its proper divisors (79174183098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79157388678 is a wasteful number, since it uses less digits than its factorization.

79157388678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399539.

The product of its digits is 142248960, while the sum is 69.

The spelling of 79157388678 in words is "seventy-nine billion, one hundred fifty-seven million, three hundred eighty-eight thousand, six hundred seventy-eight".