79742871723 has 16 divisors (see below), whose sum is σ = 108272419200. Its totient is φ = 52190061120.

The previous prime is 79742871679. The next prime is 79742871743. The reversal of 79742871723 is 32717824797.

It is not a de Polignac number, because 79742871723 - 2¹⁰ = 79742870699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79742871743) 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, 174018 + ... + 435623.

It is an arithmetic number, because the mean of its divisors is an integer number (6767026200).

Almost surely, 2^79742871723 is an apocalyptic number.

79742871723 is a deficient number, since it is larger than the sum of its proper divisors (28529547477).

79742871723 is a wasteful number, since it uses less digits than its factorization.

79742871723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610442.

The product of its digits is 8297856, while the sum is 57.

The spelling of 79742871723 in words is "seventy-nine billion, seven hundred forty-two million, eight hundred seventy-one thousand, seven hundred twenty-three".