12132521154 has 72 divisors (see below), whose sum is σ = 28504036080. Its totient is φ = 3727934496.

The previous prime is 12132521111. The next prime is 12132521161. The reversal of 12132521154 is 45112523121.

It is a happy number.

12132521154 is a `hidden beast` number, since 1 + 2 + 132 + 521 + 1 + 5 + 4 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2610757 + ... + 2615399.

It is an arithmetic number, because the mean of its divisors is an integer number (395889390).

Almost surely, 2^12132521154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12132521154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14252018040).

12132521154 is an abundant number, since it is smaller than the sum of its proper divisors (16371514926).

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

12132521154 is a wasteful number, since it uses less digits than its factorization.

12132521154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536 (or 5520 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The spelling of 12132521154 in words is "twelve billion, one hundred thirty-two million, five hundred twenty-one thousand, one hundred fifty-four".