79875320281 has 32 divisors (see below), whose sum is σ = 84837888000. Its totient is φ = 75093480000.

The previous prime is 79875320251. The next prime is 79875320293. The reversal of 79875320281 is 18202357897.

It is a cyclic number.

It is not a de Polignac number, because 79875320281 - 2²⁹ = 79338449369 is a prime.

It is a super-2 number, since 2×79875320281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79875320201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61870246 + ... + 61871536.

It is an arithmetic number, because the mean of its divisors is an integer number (2651184000).

Almost surely, 2^79875320281 is an apocalyptic number.

79875320281 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

79875320281 is the 126393-rd centered decagonal number.

It is an amenable number.

79875320281 is a deficient number, since it is larger than the sum of its proper divisors (4962567719).

79875320281 is a wasteful number, since it uses less digits than its factorization.

79875320281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 79875320281 in words is "seventy-nine billion, eight hundred seventy-five million, three hundred twenty thousand, two hundred eighty-one".