123013322344520 has 128 divisors (see below), whose sum is σ = 278074892160000. Its totient is φ = 48975751802880.

The previous prime is 123013322344519. The next prime is 123013322344571. The reversal of 123013322344520 is 25443223310321.

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, 21031510556 + ... + 21031516404.

It is an arithmetic number, because the mean of its divisors is an integer number (2172460095000).

Almost surely, 2^{123013322344520} is an apocalyptic number.

123013322344520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123013322344520 is an abundant number, since it is smaller than the sum of its proper divisors (155061569815480).

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

123013322344520 is a wasteful number, since it uses less digits than its factorization.

123013322344520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823 (or 8819 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 123013322344520 its reverse (25443223310321), we get a palindrome (148456545654841).

The spelling of 123013322344520 in words is "one hundred twenty-three trillion, thirteen billion, three hundred twenty-two million, three hundred forty-four thousand, five hundred twenty".