79915222472 has 36 divisors (see below), whose sum is σ = 151678631745. Its totient is φ = 39473467968.

The previous prime is 79915222459. The next prime is 79915222489. The reversal of 79915222472 is 27422251997.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 71435391076 + 8479831396 = 267274^2 + 92086^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=199894.

It is a super-4 number, since 4×79915222472⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79915222472.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71161703 + ... + 71162825.

Almost surely, 2^79915222472 is an apocalyptic number.

It is an amenable number.

79915222472 is a deficient number, since it is larger than the sum of its proper divisors (71763409273).

79915222472 is an frugal number, since it uses more digits than its factorization.

79915222472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2430 (or 1214 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

Multiplying 79915222472 by its sum of digits (50), we get a square (3995761123600 = 1998940²).

The spelling of 79915222472 in words is "seventy-nine billion, nine hundred fifteen million, two hundred twenty-two thousand, four hundred seventy-two".