159133680 has 80 divisors (see below), whose sum is σ = 548134560. Its totient is φ = 42435072.

The previous prime is 159133627. The next prime is 159133687. The reversal of 159133680 is 86331951.

It is a happy number.

159133680 is a `hidden beast` number, since 1 + 591 + 3 + 3 + 68 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×159133680² = 50647056220684800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159133687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34677 + ... + 38996.

It is an arithmetic number, because the mean of its divisors is an integer number (6851682).

Almost surely, 2^159133680 is an apocalyptic number.

159133680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159133680 is an abundant number, since it is smaller than the sum of its proper divisors (389000880).

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

159133680 is a wasteful number, since it uses less digits than its factorization.

159133680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73695 (or 73683 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 159133680 is about 12614.8198560265. The cubic root of 159133680 is about 541.9019352998.

The spelling of 159133680 in words is "one hundred fifty-nine million, one hundred thirty-three thousand, six hundred eighty".