123551135515232 has 12 divisors (see below), whose sum is σ = 243241298045676. Its totient is φ = 61775567757600.

The previous prime is 123551135515231. The next prime is 123551135515243. The reversal of 123551135515232 is 232515531155321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123551135515231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930486492394 + ... + 1930486492457.

It is an arithmetic number, because the mean of its divisors is an integer number (20270108170473).

Almost surely, 2^{123551135515232} is an apocalyptic number.

It is an amenable number.

123551135515232 is a deficient number, since it is larger than the sum of its proper divisors (119690162530444).

123551135515232 is an equidigital number, since it uses as much as digits as its factorization.

123551135515232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860972984861 (or 3860972984853 counting only the distinct ones).

The product of its digits is 675000, while the sum is 44.

The spelling of 123551135515232 in words is "one hundred twenty-three trillion, five hundred fifty-one billion, one hundred thirty-five million, five hundred fifteen thousand, two hundred thirty-two".