15857676772 has 48 divisors (see below), whose sum is σ = 33615848448. Its totient is φ = 6389729280.

The previous prime is 15857676743. The next prime is 15857676817. The reversal of 15857676772 is 27767675851.

15857676772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15857676772.

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 15 ways as a sum of consecutive naturals, for example, 454908 + ... + 488524.

It is an arithmetic number, because the mean of its divisors is an integer number (700330176).

Almost surely, 2^15857676772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15857676772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16807924224).

15857676772 is an abundant number, since it is smaller than the sum of its proper divisors (17758171676).

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

15857676772 is a wasteful number, since it uses less digits than its factorization.

15857676772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34636 (or 34634 counting only the distinct ones).

The product of its digits is 34574400, while the sum is 61.

The spelling of 15857676772 in words is "fifteen billion, eight hundred fifty-seven million, six hundred seventy-six thousand, seven hundred seventy-two".