15979056650 has 48 divisors (see below), whose sum is σ = 30214059480. Its totient is φ = 6286464000.

The previous prime is 15979056623. The next prime is 15979056673. The reversal of 15979056650 is 5665097951.

It can be written as a sum of positive squares in 12 ways, for example, as 920576281 + 15058480369 = 30341^2 + 122713^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15979056592 and 15979056601.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 735950 + ... + 757350.

Almost surely, 2^15979056650 is an apocalyptic number.

15979056650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15979056650 is a deficient number, since it is larger than the sum of its proper divisors (14235002830).

15979056650 is a wasteful number, since it uses less digits than its factorization.

15979056650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21659 (or 21654 counting only the distinct ones).

The product of its (nonzero) digits is 2551500, while the sum is 53.

The spelling of 15979056650 in words is "fifteen billion, nine hundred seventy-nine million, fifty-six thousand, six hundred fifty".