123245020552540 has 24 divisors (see below), whose sum is σ = 265809530814912. Its totient is φ = 47965629620160.

The previous prime is 123245020552531. The next prime is 123245020552553. The reversal of 123245020552540 is 45255020542321.

It is a junction number, because it is equal to n+sod(n) for n = 123245020552493 and 123245020552502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83273661796 + ... + 83273663275.

It is an arithmetic number, because the mean of its divisors is an integer number (11075397117288).

Almost surely, 2^{123245020552540} is an apocalyptic number.

123245020552540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123245020552540 is an abundant number, since it is smaller than the sum of its proper divisors (142564510262372).

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

123245020552540 is a wasteful number, since it uses less digits than its factorization.

123245020552540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166547325117 (or 166547325115 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 123245020552540 in words is "one hundred twenty-three trillion, two hundred forty-five billion, twenty million, five hundred fifty-two thousand, five hundred forty".