159917473471968 has 144 divisors (see below), whose sum is σ = 485573481993600. Its totient is φ = 49802408232192.

The previous prime is 159917473471939. The next prime is 159917473471997. The reversal of 159917473471968 is 869174374719951.

159917473471968 is a `hidden beast` number, since 1 + 5 + 9 + 9 + 1 + 74 + 73 + 471 + 9 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (159917473471939) and next prime (159917473471997).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280437618 + ... + 281007281.

It is an arithmetic number, because the mean of its divisors is an integer number (3372038069400).

Almost surely, 2^{159917473471968} is an apocalyptic number.

159917473471968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

159917473471968 is an abundant number, since it is smaller than the sum of its proper divisors (325656008521632).

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

159917473471968 is a wasteful number, since it uses less digits than its factorization.

159917473471968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561444981 (or 561444970 counting only the distinct ones).

The product of its digits is 2880541440, while the sum is 81.

The spelling of 159917473471968 in words is "one hundred fifty-nine trillion, nine hundred seventeen billion, four hundred seventy-three million, four hundred seventy-one thousand, nine hundred sixty-eight".