79953957172 has 12 divisors (see below), whose sum is σ = 140033096896. Its totient is φ = 39944500920.

The previous prime is 79953957163. The next prime is 79953957173. The reversal of 79953957172 is 27175935997.

It is a super-3 number, since 3×79953957172³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79953957173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8113878 + ... + 8123725.

Almost surely, 2^79953957172 is an apocalyptic number.

It is an amenable number.

79953957172 is a deficient number, since it is larger than the sum of its proper divisors (60079139724).

79953957172 is a wasteful number, since it uses less digits than its factorization.

79953957172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16238838 (or 16238836 counting only the distinct ones).

The product of its digits is 37507050, while the sum is 64.

The spelling of 79953957172 in words is "seventy-nine billion, nine hundred fifty-three million, nine hundred fifty-seven thousand, one hundred seventy-two".