166421046080 has 56 divisors (see below), whose sum is σ = 401306507520. Its totient is φ = 65725770240.

The previous prime is 166421046041. The next prime is 166421046139. The reversal of 166421046080 is 80640124661.

It is a super-2 number, since 2×166421046080² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3266276 + ... + 3316835.

Almost surely, 2^166421046080 is an apocalyptic number.

166421046080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166421046080 is an abundant number, since it is smaller than the sum of its proper divisors (234885461440).

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

166421046080 is an equidigital number, since it uses as much as digits as its factorization.

166421046080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6583207 (or 6583197 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 166421046080 in words is "one hundred sixty-six billion, four hundred twenty-one million, forty-six thousand, eighty".