123575265321564 has 36 divisors (see below), whose sum is σ = 335418577302984. Its totient is φ = 35307218663136.

The previous prime is 123575265321539. The next prime is 123575265321619. The reversal of 123575265321564 is 465123562575321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105081007339 + ... + 105081008514.

Almost surely, 2^{123575265321564} is an apocalyptic number.

123575265321564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123575265321564 is an abundant number, since it is smaller than the sum of its proper divisors (211843311981420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123575265321564 is a wasteful number, since it uses less digits than its factorization.

123575265321564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210162015874 (or 210162015865 counting only the distinct ones).

The product of its digits is 45360000, while the sum is 57.

The spelling of 123575265321564 in words is "one hundred twenty-three trillion, five hundred seventy-five billion, two hundred sixty-five million, three hundred twenty-one thousand, five hundred sixty-four".