159261032178 has 12 divisors (see below), whose sum is σ = 345065569758. Its totient is φ = 53087010720.

The previous prime is 159261032137. The next prime is 159261032197. The reversal of 159261032178 is 871230162951.

159261032178 is a `hidden beast` number, since 1 + 5 + 9 + 2 + 610 + 3 + 21 + 7 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 142904412729 + 16356619449 = 378027^2 + 127893^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4423917543 + ... + 4423917578.

Almost surely, 2^159261032178 is an apocalyptic number.

159261032178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

159261032178 is an abundant number, since it is smaller than the sum of its proper divisors (185804537580).

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

159261032178 is a wasteful number, since it uses less digits than its factorization.

159261032178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8847835129 (or 8847835126 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 159261032178 in words is "one hundred fifty-nine billion, two hundred sixty-one million, thirty-two thousand, one hundred seventy-eight".