166373964393320 has 32 divisors (see below), whose sum is σ = 374362514704800. Its totient is φ = 66545835567168.

The previous prime is 166373964393317. The next prime is 166373964393367. The reversal of 166373964393320 is 23393469373661.

It is a super-2 number, since 2×166373964393320² (a number of 29 digits) contains 22 as substring.

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, 116474690 + ... + 117894449.

It is an arithmetic number, because the mean of its divisors is an integer number (11698828584525).

Almost surely, 2^{166373964393320} is an apocalyptic number.

166373964393320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166373964393320 is an abundant number, since it is smaller than the sum of its proper divisors (207988550311480).

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

166373964393320 is a wasteful number, since it uses less digits than its factorization.

166373964393320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234386897 (or 234386893 counting only the distinct ones).

The product of its (nonzero) digits is 238085568, while the sum is 65.

The spelling of 166373964393320 in words is "one hundred sixty-six trillion, three hundred seventy-three billion, nine hundred sixty-four million, three hundred ninety-three thousand, three hundred twenty".