123171626423512 has 32 divisors (see below), whose sum is σ = 232046478074880. Its totient is φ = 61292718087840.

The previous prime is 123171626423501. The next prime is 123171626423513. The reversal of 123171626423512 is 215324626171321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123171626423513) 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, 3064914 + ... + 15991777.

It is an arithmetic number, because the mean of its divisors is an integer number (7251452439840).

Almost surely, 2^{123171626423512} is an apocalyptic number.

It is an amenable number.

123171626423512 is a deficient number, since it is larger than the sum of its proper divisors (108874851651368).

123171626423512 is a wasteful number, since it uses less digits than its factorization.

123171626423512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19060543 (or 19060539 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The spelling of 123171626423512 in words is "one hundred twenty-three trillion, one hundred seventy-one billion, six hundred twenty-six million, four hundred twenty-three thousand, five hundred twelve".