123531511552045 has 16 divisors (see below), whose sum is σ = 150329413278720. Its totient is φ = 97430878944000.

The previous prime is 123531511552019. The next prime is 123531511552091. The reversal of 123531511552045 is 540255115135321.

It is not a de Polignac number, because 123531511552045 - 2⁹ = 123531511551533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123531511551992 and 123531511552010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10012741 + ... + 18636469.

It is an arithmetic number, because the mean of its divisors is an integer number (9395588329920).

Almost surely, 2^{123531511552045} is an apocalyptic number.

It is an amenable number.

123531511552045 is a deficient number, since it is larger than the sum of its proper divisors (26797901726675).

123531511552045 is an equidigital number, since it uses as much as digits as its factorization.

123531511552045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8664156.

The product of its (nonzero) digits is 450000, while the sum is 43.

Adding to 123531511552045 its reverse (540255115135321), we get a palindrome (663786626687366).

The spelling of 123531511552045 in words is "one hundred twenty-three trillion, five hundred thirty-one billion, five hundred eleven million, five hundred fifty-two thousand, forty-five".