166463563968 has 140 divisors (see below), whose sum is σ = 531408071040. Its totient is φ = 51219537408.

The previous prime is 166463563951. The next prime is 166463563993. The reversal of 166463563968 is 869365364661.

166463563968 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 6 + 3 + 563 + 9 + 68 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1167648 + ... + 1302431.

It is an arithmetic number, because the mean of its divisors is an integer number (3795771936).

Almost surely, 2^166463563968 is an apocalyptic number.

166463563968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

166463563968 is an abundant number, since it is smaller than the sum of its proper divisors (364944507072).

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

166463563968 is a wasteful number, since it uses less digits than its factorization.

166463563968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470116 (or 2470097 counting only the distinct ones).

The product of its digits is 100776960, while the sum is 63.

The spelling of 166463563968 in words is "one hundred sixty-six billion, four hundred sixty-three million, five hundred sixty-three thousand, nine hundred sixty-eight".