15959449668 has 36 divisors (see below), whose sum is σ = 38928200528. Its totient is φ = 5088518160.

The previous prime is 15959449643. The next prime is 15959449733. The reversal of 15959449668 is 86694495951.

It is a junction number, because it is equal to n+sod(n) for n = 15959449599 and 15959449608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1250698 + ... + 1263393.

Almost surely, 2^15959449668 is an apocalyptic number.

It is an amenable number.

15959449668 is an abundant number, since it is smaller than the sum of its proper divisors (22968750860).

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

15959449668 is a wasteful number, since it uses less digits than its factorization.

15959449668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514144 (or 2514119 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 66.

The spelling of 15959449668 in words is "fifteen billion, nine hundred fifty-nine million, four hundred forty-nine thousand, six hundred sixty-eight".