123576312272 has 40 divisors (see below), whose sum is σ = 273681667776. Its totient is φ = 52951908096.

The previous prime is 123576312269. The next prime is 123576312329. The reversal of 123576312272 is 272213675321.

It is a super-2 number, since 2×123576312272² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557948 + ... + 747300.

Almost surely, 2^123576312272 is an apocalyptic number.

It is an amenable number.

123576312272 is an abundant number, since it is smaller than the sum of its proper divisors (150105355504).

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

123576312272 is a wasteful number, since it uses less digits than its factorization.

123576312272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195195 (or 195189 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

Adding to 123576312272 its reverse (272213675321), we get a palindrome (395789987593).

The spelling of 123576312272 in words is "one hundred twenty-three billion, five hundred seventy-six million, three hundred twelve thousand, two hundred seventy-two".