123243351552252 has 144 divisors (see below), whose sum is σ = 318138116482368. Its totient is φ = 40216729512960.

The previous prime is 123243351552241. The next prime is 123243351552311. The reversal of 123243351552252 is 252255153342321.

123243351552252 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 4 + 33 + 515 + 52 + 2 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 123243351552198 and 123243351552207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 448700953 + ... + 448975535.

It is an arithmetic number, because the mean of its divisors is an integer number (2209292475572).

Almost surely, 2^{123243351552252} is an apocalyptic number.

123243351552252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123243351552252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159069058241184).

123243351552252 is an abundant number, since it is smaller than the sum of its proper divisors (194894764930116).

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

123243351552252 is a wasteful number, since it uses less digits than its factorization.

123243351552252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275620 (or 275615 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

The spelling of 123243351552252 in words is "one hundred twenty-three trillion, two hundred forty-three billion, three hundred fifty-one million, five hundred fifty-two thousand, two hundred fifty-two".