159666540 has 48 divisors (see below), whose sum is σ = 487710720. Its totient is φ = 38706880.

The previous prime is 159666539. The next prime is 159666553. The reversal of 159666540 is 45666951.

It is a junction number, because it is equal to n+sod(n) for n = 159666492 and 159666501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120300 + ... + 121619.

It is an arithmetic number, because the mean of its divisors is an integer number (10160640).

Almost surely, 2^159666540 is an apocalyptic number.

159666540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159666540 is an abundant number, since it is smaller than the sum of its proper divisors (328044180).

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

159666540 is a wasteful number, since it uses less digits than its factorization.

159666540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241942 (or 241940 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 159666540 is about 12635.9226018522. The cubic root of 159666540 is about 542.5061153013.

The spelling of 159666540 in words is "one hundred fifty-nine million, six hundred sixty-six thousand, five hundred forty".