166406526608 has 20 divisors (see below), whose sum is σ = 368471594880. Its totient is φ = 71317082784.

The previous prime is 166406526593. The next prime is 166406526631. The reversal of 166406526608 is 806625604661.

It is a super-2 number, since 2×166406526608² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742886168 + ... + 742886391.

It is an arithmetic number, because the mean of its divisors is an integer number (18423579744).

Almost surely, 2^166406526608 is an apocalyptic number.

It is an amenable number.

166406526608 is an abundant number, since it is smaller than the sum of its proper divisors (202065068272).

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

166406526608 is a wasteful number, since it uses less digits than its factorization.

166406526608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485772574 (or 1485772568 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 166406526608 in words is "one hundred sixty-six billion, four hundred six million, five hundred twenty-six thousand, six hundred eight".