159879641865 has 32 divisors (see below), whose sum is σ = 259098048000. Its totient is φ = 84172707840.

The previous prime is 159879641839. The next prime is 159879641939. The reversal of 159879641865 is 568146978951.

It is not a de Polignac number, because 159879641865 - 2¹² = 159879637769 is a prime.

It is a super-2 number, since 2×159879641865² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 159879641865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7631605 + ... + 7652525.

It is an arithmetic number, because the mean of its divisors is an integer number (8096814000).

Almost surely, 2^159879641865 is an apocalyptic number.

159879641865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159879641865 is a deficient number, since it is larger than the sum of its proper divisors (99218406135).

159879641865 is a wasteful number, since it uses less digits than its factorization.

159879641865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27457.

The product of its digits is 130636800, while the sum is 69.

The spelling of 159879641865 in words is "one hundred fifty-nine billion, eight hundred seventy-nine million, six hundred forty-one thousand, eight hundred sixty-five".