166026255564 has 48 divisors (see below), whose sum is σ = 422909198432. Its totient is φ = 50385203712.

The previous prime is 166026255557. The next prime is 166026255631. The reversal of 166026255564 is 465552620661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7278139 + ... + 7300914.

Almost surely, 2^166026255564 is an apocalyptic number.

It is an amenable number.

166026255564 is an abundant number, since it is smaller than the sum of its proper divisors (256882942868).

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

166026255564 is a wasteful number, since it uses less digits than its factorization.

166026255564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14579146 (or 14579144 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 166026255564 in words is "one hundred sixty-six billion, twenty-six million, two hundred fifty-five thousand, five hundred sixty-four".