15952991252 has 12 divisors (see below), whose sum is σ = 30455710656. Its totient is φ = 7251359640.

The previous prime is 15952991221. The next prime is 15952991269. The reversal of 15952991252 is 25219925951.

It is a self number, because there is not a number n which added to its sum of digits gives 15952991252.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181283948 + ... + 181284035.

It is an arithmetic number, because the mean of its divisors is an integer number (2537975888).

Almost surely, 2^15952991252 is an apocalyptic number.

It is an amenable number.

15952991252 is a deficient number, since it is larger than the sum of its proper divisors (14502719404).

15952991252 is a wasteful number, since it uses less digits than its factorization.

15952991252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362567998 (or 362567996 counting only the distinct ones).

The product of its digits is 729000, while the sum is 50.

The spelling of 15952991252 in words is "fifteen billion, nine hundred fifty-two million, nine hundred ninety-one thousand, two hundred fifty-two".