15957818328 has 16 divisors (see below), whose sum is σ = 39894545880. Its totient is φ = 5319272768.

The previous prime is 15957818299. The next prime is 15957818329. The reversal of 15957818328 is 82381875951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15957818329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332454525 + ... + 332454572.

Almost surely, 2^15957818328 is an apocalyptic number.

It is an amenable number.

15957818328 is an abundant number, since it is smaller than the sum of its proper divisors (23936727552).

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

15957818328 is a wasteful number, since it uses less digits than its factorization.

15957818328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664909106 (or 664909102 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 57.

It can be divided in two parts, 159578 and 18328, that added together give a triangular number (177906 = T₅₉₆).

The spelling of 15957818328 in words is "fifteen billion, nine hundred fifty-seven million, eight hundred eighteen thousand, three hundred twenty-eight".