159505991472 has 20 divisors (see below), whose sum is σ = 412057144760. Its totient is φ = 53168663808.

The previous prime is 159505991377. The next prime is 159505991501. The reversal of 159505991472 is 274199505951.

It is a super-2 number, since 2×159505991472² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661520697 + ... + 1661520792.

It is an arithmetic number, because the mean of its divisors is an integer number (20602857238).

Almost surely, 2^159505991472 is an apocalyptic number.

159505991472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

159505991472 is an abundant number, since it is smaller than the sum of its proper divisors (252551153288).

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

159505991472 is a wasteful number, since it uses less digits than its factorization.

159505991472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323041500 (or 3323041494 counting only the distinct ones).

The product of its (nonzero) digits is 5103000, while the sum is 57.

The spelling of 159505991472 in words is "one hundred fifty-nine billion, five hundred five million, nine hundred ninety-one thousand, four hundred seventy-two".