123525513113440 has 48 divisors (see below), whose sum is σ = 293959163649312. Its totient is φ = 49049546804224.

The previous prime is 123525513113363. The next prime is 123525513113447. The reversal of 123525513113440 is 44311315525321.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 123525513113393 and 123525513113402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123525513113447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2817622084 + ... + 2817665923.

It is an arithmetic number, because the mean of its divisors is an integer number (6124149242694).

Almost surely, 2^{123525513113440} is an apocalyptic number.

123525513113440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123525513113440 is an abundant number, since it is smaller than the sum of its proper divisors (170433650535872).

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

123525513113440 is a wasteful number, since it uses less digits than its factorization.

123525513113440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635288159 (or 5635288151 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

Adding to 123525513113440 its reverse (44311315525321), we get a palindrome (167836828638761).

The spelling of 123525513113440 in words is "one hundred twenty-three trillion, five hundred twenty-five billion, five hundred thirteen million, one hundred thirteen thousand, four hundred forty".