166132212420 has 96 divisors (see below), whose sum is σ = 488393136000. Its totient is φ = 42135819264.

The previous prime is 166132212419. The next prime is 166132212461. The reversal of 166132212420 is 24212231661.

It is a super-3 number, since 3×166132212420³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 595945 + ... + 829104.

It is an arithmetic number, because the mean of its divisors is an integer number (5087428500).

Almost surely, 2^166132212420 is an apocalyptic number.

166132212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166132212420 is an abundant number, since it is smaller than the sum of its proper divisors (322260923580).

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

166132212420 is a wasteful number, since it uses less digits than its factorization.

166132212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425157 (or 1425155 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 166132212420 in words is "one hundred sixty-six billion, one hundred thirty-two million, two hundred twelve thousand, four hundred twenty".