15660000650 has 36 divisors (see below), whose sum is σ = 33883133238. Its totient is φ = 5369142240.

The previous prime is 15660000647. The next prime is 15660000749. The reversal of 15660000650 is 5600006651.

It can be written as a sum of positive squares in 3 ways, for example, as 12033431809 + 3626568841 = 109697^2 + 60221^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3193469 + ... + 3198368.

Almost surely, 2^15660000650 is an apocalyptic number.

15660000650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15660000650 is an abundant number, since it is smaller than the sum of its proper divisors (18223132588).

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

15660000650 is a wasteful number, since it uses less digits than its factorization.

15660000650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6391863 (or 6391851 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 15660000650 in words is "fifteen billion, six hundred sixty million, six hundred fifty", and thus it is an aban number.