79163581497 has 64 divisors (see below), whose sum is σ = 142356135936. Its totient is φ = 37790012160.

The previous prime is 79163581477. The next prime is 79163581499. The reversal of 79163581497 is 79418536197.

It is not a de Polignac number, because 79163581497 - 2¹⁶ = 79163515961 is a prime.

It is a super-2 number, since 2×79163581497² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 79163581497.

It is not an unprimeable number, because it can be changed into a prime (79163581499) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 610563 + ... + 728775.

It is an arithmetic number, because the mean of its divisors is an integer number (2224314624).

Almost surely, 2^79163581497 is an apocalyptic number.

79163581497 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

79163581497 is a deficient number, since it is larger than the sum of its proper divisors (63192554439).

79163581497 is a wasteful number, since it uses less digits than its factorization.

79163581497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118470.

The product of its digits is 11430720, while the sum is 60.

The spelling of 79163581497 in words is "seventy-nine billion, one hundred sixty-three million, five hundred eighty-one thousand, four hundred ninety-seven".