79157388388 has 48 divisors (see below), whose sum is σ = 158085270000. Its totient is φ = 34357100544.

The previous prime is 79157388361. The next prime is 79157388389. The reversal of 79157388388 is 88388375197.

It can be written as a sum of positive squares in 8 ways, for example, as 5212551204 + 73944837184 = 72198^2 + 271928^2 .

It is not an unprimeable number, because it can be changed into a prime (79157388389) 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, 1068270 + ... + 1139962.

It is an arithmetic number, because the mean of its divisors is an integer number (3293443125).

Almost surely, 2^79157388388 is an apocalyptic number.

It is an amenable number.

79157388388 is a deficient number, since it is larger than the sum of its proper divisors (78927881612).

79157388388 is a wasteful number, since it uses less digits than its factorization.

79157388388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72976 (or 72974 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 67.

The spelling of 79157388388 in words is "seventy-nine billion, one hundred fifty-seven million, three hundred eighty-eight thousand, three hundred eighty-eight".