79962577531 has 4 divisors (see below), whose sum is σ = 79979819200. Its totient is φ = 79945335864.

The previous prime is 79962577483. The next prime is 79962577537. The reversal of 79962577531 is 13577526997.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13577526997 = 4493 ⋅3021929.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79962577531 is a prime.

It is a super-2 number, since 2×79962577531² (a number of 23 digits) contains 22 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 79962577531.

It is not an unprimeable number, because it can be changed into a prime (79962577537) 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, 8613876 + ... + 8623153.

It is an arithmetic number, because the mean of its divisors is an integer number (19994954800).

Almost surely, 2^79962577531 is an apocalyptic number.

79962577531 is a deficient number, since it is larger than the sum of its proper divisors (17241669).

79962577531 is a wasteful number, since it uses less digits than its factorization.

79962577531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17241668.

The product of its digits is 25004700, while the sum is 61.

The spelling of 79962577531 in words is "seventy-nine billion, nine hundred sixty-two million, five hundred seventy-seven thousand, five hundred thirty-one".