123915135327258 has 96 divisors (see below), whose sum is σ = 285599501784576. Its totient is φ = 35747204724000.

The previous prime is 123915135327227. The next prime is 123915135327259. The reversal of 123915135327258 is 852723531519321.

It is a junction number, because it is equal to n+sod(n) for n = 123915135327198 and 123915135327207.

It is not an unprimeable number, because it can be changed into a prime (123915135327259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14061928 + ... + 21108483.

It is an arithmetic number, because the mean of its divisors is an integer number (2974994810256).

Almost surely, 2^{123915135327258} is an apocalyptic number.

123915135327258 is an abundant number, since it is smaller than the sum of its proper divisors (161684366457318).

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

123915135327258 is a wasteful number, since it uses less digits than its factorization.

123915135327258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35170672 (or 35170661 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 57.

The spelling of 123915135327258 in words is "one hundred twenty-three trillion, nine hundred fifteen billion, one hundred thirty-five million, three hundred twenty-seven thousand, two hundred fifty-eight".