15691284056 has 32 divisors (see below), whose sum is σ = 33637728000. Its totient is φ = 6722126496.

The previous prime is 15691284047. The next prime is 15691284061. The reversal of 15691284056 is 65048219651.

It is a super-2 number, since 2×15691284056² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15691284056.

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, 87005 + ... + 197363.

It is an arithmetic number, because the mean of its divisors is an integer number (1051179000).

Almost surely, 2^15691284056 is an apocalyptic number.

It is an amenable number.

15691284056 is an abundant number, since it is smaller than the sum of its proper divisors (17946443944).

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

15691284056 is a wasteful number, since it uses less digits than its factorization.

15691284056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112911 (or 112907 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 15691284056 in words is "fifteen billion, six hundred ninety-one million, two hundred eighty-four thousand, fifty-six".