79109871492 has 24 divisors (see below), whose sum is σ = 184594559296. Its totient is φ = 26369263008.

The previous prime is 79109871473. The next prime is 79109871499. The reversal of 79109871492 is 29417890197.

It is not an unprimeable number, because it can be changed into a prime (79109871499) 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 7 ways as a sum of consecutive naturals, for example, 615318 + ... + 732690.

Almost surely, 2^79109871492 is an apocalyptic number.

It is an amenable number.

79109871492 is an abundant number, since it is smaller than the sum of its proper divisors (105484687804).

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

79109871492 is a wasteful number, since it uses less digits than its factorization.

79109871492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173547 (or 173545 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 79109871492 in words is "seventy-nine billion, one hundred nine million, eight hundred seventy-one thousand, four hundred ninety-two".