15992047856 has 80 divisors (see below), whose sum is σ = 31996702080. Its totient is φ = 7739746560.

The previous prime is 15992047853. The next prime is 15992047861. The reversal of 15992047856 is 65874029951.

15992047856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15992047853) by changing a digit.

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, 24870671 + ... + 24871313.

It is an arithmetic number, because the mean of its divisors is an integer number (399958776).

Almost surely, 2^15992047856 is an apocalyptic number.

15992047856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15992047856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

15992047856 is a wasteful number, since it uses less digits than its factorization.

15992047856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 15992047856 in words is "fifteen billion, nine hundred ninety-two million, forty-seven thousand, eight hundred fifty-six".