123013311444545 has 32 divisors (see below), whose sum is σ = 154338096798720. Its totient is φ = 94124082803520.

The previous prime is 123013311444509. The next prime is 123013311444563. The reversal of 123013311444545 is 545444113310321.

It is not a de Polignac number, because 123013311444545 - 2²⁸ = 123013043009089 is a prime.

It is a super-2 number, since 2×123013311444545² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791203115 + ... + 791358575.

It is an arithmetic number, because the mean of its divisors is an integer number (4823065524960).

Almost surely, 2^{123013311444545} is an apocalyptic number.

It is an amenable number.

123013311444545 is a deficient number, since it is larger than the sum of its proper divisors (31324785354175).

123013311444545 is an equidigital number, since it uses as much as digits as its factorization.

123013311444545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168542 (or 168496 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 123013311444545 its reverse (545444113310321), we get a palindrome (668457424754866).

The spelling of 123013311444545 in words is "one hundred twenty-three trillion, thirteen billion, three hundred eleven million, four hundred forty-four thousand, five hundred forty-five".