166822501556000 has 48 divisors (see below), whose sum is σ = 409882886332920. Its totient is φ = 66729000620800.

The previous prime is 166822501555987. The next prime is 166822501556021. The reversal of 166822501556000 is 655105228661.

It can be written as a sum of positive squares in 4 ways, for example, as 94587528774544 + 72234972781456 = 9725612^2 + 8499116^2 .

It is a super-2 number, since 2×166822501556000² (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, 20852808695 + ... + 20852816694.

Almost surely, 2^{166822501556000} is an apocalyptic number.

166822501556000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166822501556000 is an abundant number, since it is smaller than the sum of its proper divisors (243060384776920).

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

166822501556000 is an equidigital number, since it uses as much as digits as its factorization.

166822501556000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41705625414 (or 41705625396 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 166822501556000 in words is "one hundred sixty-six trillion, eight hundred twenty-two billion, five hundred one million, five hundred fifty-six thousand".