15213124252 has 24 divisors (see below), whose sum is σ = 27125585424. Its totient is φ = 7463841792.

The previous prime is 15213124177. The next prime is 15213124273. The reversal of 15213124252 is 25242131251.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15213124252.

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, 41563 + ... + 179314.

It is an arithmetic number, because the mean of its divisors is an integer number (1130232726).

Almost surely, 2^15213124252 is an apocalyptic number.

It is an amenable number.

15213124252 is a deficient number, since it is larger than the sum of its proper divisors (11912461172).

15213124252 is a wasteful number, since it uses less digits than its factorization.

15213124252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221205 (or 221203 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The spelling of 15213124252 in words is "fifteen billion, two hundred thirteen million, one hundred twenty-four thousand, two hundred fifty-two".