79210377591 has 16 divisors (see below), whose sum is σ = 107135216640. Its totient is φ = 52046699040.

The previous prime is 79210377581. The next prime is 79210377613. The reversal of 79210377591 is 19577301297.

It is a de Polignac number, because none of the positive numbers 2^k-79210377591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79210377551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635730 + ... + 750048.

It is an arithmetic number, because the mean of its divisors is an integer number (6695951040).

Almost surely, 2^79210377591 is an apocalyptic number.

79210377591 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

79210377591 is a deficient number, since it is larger than the sum of its proper divisors (27924839049).

79210377591 is a wasteful number, since it uses less digits than its factorization.

79210377591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117646.

The product of its (nonzero) digits is 833490, while the sum is 51.

The spelling of 79210377591 in words is "seventy-nine billion, two hundred ten million, three hundred seventy-seven thousand, five hundred ninety-one".