79099312516 has 27 divisors (see below), whose sum is σ = 161031616389. Its totient is φ = 33898017888.

The previous prime is 79099312511. The next prime is 79099312517. The reversal of 79099312516 is 61521399097.

It is a happy number.

The square root of 79099312516 is 281246.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 10413386116 + 68685926400 = 102046^2 + 262080^2 .

It is not an unprimeable number, because it can be changed into a prime (79099312511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3927400 + ... + 3947488.

Almost surely, 2^79099312516 is an apocalyptic number.

79099312516 is the 281246-th square number.

It is an amenable number.

79099312516 is an abundant number, since it is smaller than the sum of its proper divisors (81932303873).

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

79099312516 is an frugal number, since it uses more digits than its factorization.

79099312516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40196 (or 20098 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The spelling of 79099312516 in words is "seventy-nine billion, ninety-nine million, three hundred twelve thousand, five hundred sixteen".