79384976691 has 8 divisors (see below), whose sum is σ = 106207888080. Its totient is φ = 52742691552.

The previous prime is 79384976683. The next prime is 79384976743. The reversal of 79384976691 is 19667948397.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79384976691 - 2³ = 79384976683 is a prime.

It is a super-2 number, since 2×79384976691² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79384976651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45155536 + ... + 45157293.

It is an arithmetic number, because the mean of its divisors is an integer number (13275986010).

Almost surely, 2^79384976691 is an apocalyptic number.

79384976691 is a deficient number, since it is larger than the sum of its proper divisors (26822911389).

79384976691 is a wasteful number, since it uses less digits than its factorization.

79384976691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90313125.

The product of its digits is 123451776, while the sum is 69.

It can be divided in two parts, 793849 and 76691, that added together give a triangular number (870540 = T₁₃₁₉).

The spelling of 79384976691 in words is "seventy-nine billion, three hundred eighty-four million, nine hundred seventy-six thousand, six hundred ninety-one".