79638711723 has 12 divisors (see below), whose sum is σ = 117839395128. Its totient is φ = 51797535840.

The previous prime is 79638711701. The next prime is 79638711727. The reversal of 79638711723 is 32711783697.

79638711723 is a `hidden beast` number, since 7 + 96 + 387 + 1 + 172 + 3 = 666.

It is not a de Polignac number, because 79638711723 - 2¹² = 79638707627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79638711723.

It is not an unprimeable number, because it can be changed into a prime (79638711727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107911165 + ... + 107911902.

It is an arithmetic number, because the mean of its divisors is an integer number (9819949594).

Almost surely, 2^79638711723 is an apocalyptic number.

79638711723 is a deficient number, since it is larger than the sum of its proper divisors (38200683405).

79638711723 is a wasteful number, since it uses less digits than its factorization.

79638711723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215823114 (or 215823111 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The spelling of 79638711723 in words is "seventy-nine billion, six hundred thirty-eight million, seven hundred eleven thousand, seven hundred twenty-three".