166211770575330 has 64 divisors (see below), whose sum is σ = 445527924030720. Its totient is φ = 44093485237248.

The previous prime is 166211770575293. The next prime is 166211770575337. The reversal of 166211770575330 is 33575077112661.

166211770575330 is a `hidden beast` number, since 1 + 6 + 6 + 21 + 17 + 7 + 0 + 575 + 3 + 30 = 666.

166211770575330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166211770575330² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (166211770575337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1594764342 + ... + 1594868561.

It is an arithmetic number, because the mean of its divisors is an integer number (6961373812980).

Almost surely, 2^{166211770575330} is an apocalyptic number.

166211770575330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166211770575330 is an abundant number, since it is smaller than the sum of its proper divisors (279316153455390).

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

166211770575330 is a wasteful number, since it uses less digits than its factorization.

166211770575330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189633112 (or 3189633106 counting only the distinct ones).

The product of its (nonzero) digits is 5556600, while the sum is 54.

The spelling of 166211770575330 in words is "one hundred sixty-six trillion, two hundred eleven billion, seven hundred seventy million, five hundred seventy-five thousand, three hundred thirty".