123691048502079 has 16 divisors (see below), whose sum is σ = 169382816589312. Its totient is φ = 80230097168928.

The previous prime is 123691048502071. The next prime is 123691048502081. The reversal of 123691048502079 is 970205840196321.

It is not a de Polignac number, because 123691048502079 - 2³ = 123691048502071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123691048502071) 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, 8800539 + ... + 18023084.

It is an arithmetic number, because the mean of its divisors is an integer number (10586426036832).

It is a 1-persistent number, because it is pandigital, but 2⋅123691048502079 = 247382097004158 is not.

Almost surely, 2^{123691048502079} is an apocalyptic number.

123691048502079 is a deficient number, since it is larger than the sum of its proper divisors (45691768087233).

123691048502079 is a wasteful number, since it uses less digits than its factorization.

123691048502079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26865206.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 123691048502079 in words is "one hundred twenty-three trillion, six hundred ninety-one billion, forty-eight million, five hundred two thousand, seventy-nine".