166590427685440 has 112 divisors (see below), whose sum is σ = 451571997479040. Its totient is φ = 57944496558080.

The previous prime is 166590427685431. The next prime is 166590427685447. The reversal of 166590427685440 is 44586724095661.

It is a hoax number, since the sum of its digits (67) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (166590427685447) 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, 1028763085 + ... + 1028925004.

Almost surely, 2^{166590427685440} is an apocalyptic number.

166590427685440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166590427685440 is an abundant number, since it is smaller than the sum of its proper divisors (284981569793600).

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

166590427685440 is a wasteful number, since it uses less digits than its factorization.

166590427685440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057688140 (or 2057688130 counting only the distinct ones).

The product of its (nonzero) digits is 348364800, while the sum is 67.

The spelling of 166590427685440 in words is "one hundred sixty-six trillion, five hundred ninety billion, four hundred twenty-seven million, six hundred eighty-five thousand, four hundred forty".