12154531534320 has 160 divisors (see below), whose sum is σ = 43346947046400. Its totient is φ = 2759780044800.

The previous prime is 12154531534309. The next prime is 12154531534339. The reversal of 12154531534320 is 2343513545121.

12154531534320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 23702745 + ... + 24210104.

It is an arithmetic number, because the mean of its divisors is an integer number (270918419040).

Almost surely, 2^{12154531534320} is an apocalyptic number.

12154531534320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12154531534320 is an abundant number, since it is smaller than the sum of its proper divisors (31192415512080).

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

12154531534320 is a wasteful number, since it uses less digits than its factorization.

12154531534320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47913023 (or 47913017 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 12154531534320 in words is "twelve trillion, one hundred fifty-four billion, five hundred thirty-one million, five hundred thirty-four thousand, three hundred twenty".