166632580898820 has 576 divisors, whose sum is σ = 568047707136000. Its totient is φ = 39291045580800.

The previous prime is 166632580898789. The next prime is 166632580898831. The reversal of 166632580898820 is 28898085236661.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5258689017 + ... + 5258720703.

It is an arithmetic number, because the mean of its divisors is an integer number (986193936000).

Almost surely, 2^{166632580898820} is an apocalyptic number.

166632580898820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166632580898820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284023853568000).

166632580898820 is an abundant number, since it is smaller than the sum of its proper divisors (401415126237180).

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

166632580898820 is a wasteful number, since it uses less digits than its factorization.

166632580898820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32488 (or 32483 counting only the distinct ones).

The product of its (nonzero) digits is 477757440, while the sum is 72.

The spelling of 166632580898820 in words is "one hundred sixty-six trillion, six hundred thirty-two billion, five hundred eighty million, eight hundred ninety-eight thousand, eight hundred twenty".