79522308009 has 15 divisors (see below), whose sum is σ = 118796374983. Its totient is φ = 53013180024.

The previous prime is 79522307999. The next prime is 79522308013. The reversal of 79522308009 is 90080322597.

The square root of 79522308009 is 281997.

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., 79481705625 + 40602384 = 281925^2 + 6372^2 .

It is not a de Polignac number, because 79522308009 - 2²⁷ = 79388090281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79522308079) 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 14 ways as a sum of consecutive naturals, for example, 2522307 + ... + 2553639.

Almost surely, 2^79522308009 is an apocalyptic number.

79522308009 is the 281997-th square number.

79522308009 is the 140999-th centered octagonal number.

It is an amenable number.

79522308009 is a deficient number, since it is larger than the sum of its proper divisors (39274066974).

79522308009 is an frugal number, since it uses more digits than its factorization.

79522308009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62678 (or 31336 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 79522308009 in words is "seventy-nine billion, five hundred twenty-two million, three hundred eight thousand, nine".