166164057012 has 24 divisors (see below), whose sum is σ = 388939221216. Its totient is φ = 55213292128.

The previous prime is 166164056999. The next prime is 166164057013. The reversal of 166164057012 is 210750461661.

It is a super-2 number, since 2×166164057012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166164057013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21836898 + ... + 21844505.

It is an arithmetic number, because the mean of its divisors is an integer number (16205800884).

Almost surely, 2^166164057012 is an apocalyptic number.

166164057012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166164057012 is an abundant number, since it is smaller than the sum of its proper divisors (222775164204).

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

166164057012 is a wasteful number, since it uses less digits than its factorization.

166164057012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43681727 (or 43681725 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 166164057012 in words is "one hundred sixty-six billion, one hundred sixty-four million, fifty-seven thousand, twelve".