159990657020 has 24 divisors (see below), whose sum is σ = 336454288800. Its totient is φ = 63905994432.

The previous prime is 159990656977. The next prime is 159990657041. The reversal of 159990657020 is 20756099951.

It is a happy number.

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, 5627240 + ... + 5655599.

It is an arithmetic number, because the mean of its divisors is an integer number (14018928700).

Almost surely, 2^159990657020 is an apocalyptic number.

159990657020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159990657020 is an abundant number, since it is smaller than the sum of its proper divisors (176463631780).

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

159990657020 is a wasteful number, since it uses less digits than its factorization.

159990657020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11283557 (or 11283555 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 53.

The spelling of 159990657020 in words is "one hundred fifty-nine billion, nine hundred ninety million, six hundred fifty-seven thousand, twenty".