15694968856 has 16 divisors (see below), whose sum is σ = 33632076240. Its totient is φ = 6726415200.

The previous prime is 15694968851. The next prime is 15694968859. The reversal of 15694968856 is 65886949651.

It is a junction number, because it is equal to n+sod(n) for n = 15694968791 and 15694968800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15694968851) 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, 140133595 + ... + 140133706.

It is an arithmetic number, because the mean of its divisors is an integer number (2102004765).

Almost surely, 2^15694968856 is an apocalyptic number.

It is an amenable number.

15694968856 is an abundant number, since it is smaller than the sum of its proper divisors (17937107384).

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

15694968856 is a wasteful number, since it uses less digits than its factorization.

15694968856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280267314 (or 280267310 counting only the distinct ones).

The product of its digits is 111974400, while the sum is 67.

The spelling of 15694968856 in words is "fifteen billion, six hundred ninety-four million, nine hundred sixty-eight thousand, eight hundred fifty-six".