159666728100 has 72 divisors (see below), whose sum is σ = 503966264928. Its totient is φ = 38707084800.

The previous prime is 159666728087. The next prime is 159666728101. The reversal of 159666728100 is 1827666951.

It is a super-2 number, since 2×159666728100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159666728101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24188629 + ... + 24195228.

Almost surely, 2^159666728100 is an apocalyptic number.

159666728100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159666728100 is an abundant number, since it is smaller than the sum of its proper divisors (344299536828).

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

159666728100 is a wasteful number, since it uses less digits than its factorization.

159666728100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48383885 (or 48383878 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 159666728100 in words is "one hundred fifty-nine billion, six hundred sixty-six million, seven hundred twenty-eight thousand, one hundred".