159606172866 has 48 divisors (see below), whose sum is σ = 379964227104. Its totient is φ = 44541254016.

The previous prime is 159606172861. The next prime is 159606172871. The reversal of 159606172866 is 668271606951.

It is an interprime number because it is at equal distance from previous prime (159606172861) and next prime (159606172871).

It is not an unprimeable number, because it can be changed into a prime (159606172861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6299895 + ... + 6325178.

It is an arithmetic number, because the mean of its divisors is an integer number (7915921398).

Almost surely, 2^159606172866 is an apocalyptic number.

159606172866 is an abundant number, since it is smaller than the sum of its proper divisors (220358054238).

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

159606172866 is a wasteful number, since it uses less digits than its factorization.

159606172866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625135 (or 12625128 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 159606172866 in words is "one hundred fifty-nine billion, six hundred six million, one hundred seventy-two thousand, eight hundred sixty-six".