159117281672 has 16 divisors (see below), whose sum is σ = 298351746240. Its totient is φ = 79556816016.

The previous prime is 159117281621. The next prime is 159117281699. The reversal of 159117281672 is 276182711951.

It is a self number, because there is not a number n which added to its sum of digits gives 159117281672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186893 + ... + 594275.

It is an arithmetic number, because the mean of its divisors is an integer number (18646984140).

Almost surely, 2^159117281672 is an apocalyptic number.

It is an amenable number.

159117281672 is a deficient number, since it is larger than the sum of its proper divisors (139234464568).

159117281672 is a wasteful number, since it uses less digits than its factorization.

159117281672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456212 (or 456208 counting only the distinct ones).

The product of its digits is 423360, while the sum is 50.

The spelling of 159117281672 in words is "one hundred fifty-nine billion, one hundred seventeen million, two hundred eighty-one thousand, six hundred seventy-two".