166266204864 has 112 divisors (see below), whose sum is σ = 465940786176. Its totient is φ = 52145049600.

The previous prime is 166266204857. The next prime is 166266204991. The reversal of 166266204864 is 468402662661.

166266204864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13412109 + ... + 13424499.

Almost surely, 2^166266204864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166266204864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232970393088).

166266204864 is an abundant number, since it is smaller than the sum of its proper divisors (299674581312).

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

166266204864 is a wasteful number, since it uses less digits than its factorization.

166266204864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16534 (or 16524 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 166266204864 in words is "one hundred sixty-six billion, two hundred sixty-six million, two hundred four thousand, eight hundred sixty-four".