15231121452 has 72 divisors (see below), whose sum is σ = 38677294656. Its totient is φ = 5053842144.

The previous prime is 15231121429. The next prime is 15231121471. The reversal of 15231121452 is 25412113251.

It is a happy number.

15231121452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9360663 + ... + 9362289.

It is an arithmetic number, because the mean of its divisors is an integer number (537184648).

Almost surely, 2^15231121452 is an apocalyptic number.

15231121452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15231121452 is an abundant number, since it is smaller than the sum of its proper divisors (23446173204).

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

15231121452 is a wasteful number, since it uses less digits than its factorization.

15231121452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2662 counting only the distinct ones).

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

The spelling of 15231121452 in words is "fifteen billion, two hundred thirty-one million, one hundred twenty-one thousand, four hundred fifty-two".