79992000081 has 24 divisors (see below), whose sum is σ = 137791605120. Its totient is φ = 43722334656.

The previous prime is 79992000059. The next prime is 79992000169. The reversal of 79992000081 is 18000029997.

It is not a de Polignac number, because 79992000081 - 2²⁶ = 79924891217 is a prime.

It is a super-2 number, since 2×79992000081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79992000581) 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 23 ways as a sum of consecutive naturals, for example, 27601036 + ... + 27603933.

It is an arithmetic number, because the mean of its divisors is an integer number (5741316880).

Almost surely, 2^79992000081 is an apocalyptic number.

It is an amenable number.

79992000081 is a deficient number, since it is larger than the sum of its proper divisors (57799605039).

79992000081 is a wasteful number, since it uses less digits than its factorization.

79992000081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55205005 (or 55205002 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 79992000081 in words is "seventy-nine billion, nine hundred ninety-two million, eighty-one", and thus it is an aban number.