123531055502515 has 16 divisors (see below), whose sum is σ = 148283132711040. Its totient is φ = 98794268876160.

The previous prime is 123531055502507. The next prime is 123531055502597. The reversal of 123531055502515 is 515205550135321.

It is not a de Polignac number, because 123531055502515 - 2³ = 123531055502507 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 627864937 + ... + 628061653.

It is an arithmetic number, because the mean of its divisors is an integer number (9267695794440).

Almost surely, 2^{123531055502515} is an apocalyptic number.

123531055502515 is a deficient number, since it is larger than the sum of its proper divisors (24752077208525).

123531055502515 is a wasteful number, since it uses less digits than its factorization.

123531055502515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234942.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 123531055502515 in words is "one hundred twenty-three trillion, five hundred thirty-one billion, fifty-five million, five hundred two thousand, five hundred fifteen".