166078906256 has 40 divisors (see below), whose sum is σ = 331132181184. Its totient is φ = 80634372480.

The previous prime is 166078906249. The next prime is 166078906289. The reversal of 166078906256 is 652609870661.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18911 + ... + 576641.

Almost surely, 2^166078906256 is an apocalyptic number.

166078906256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166078906256 is a deficient number, since it is larger than the sum of its proper divisors (165053274928).

166078906256 is a wasteful number, since it uses less digits than its factorization.

166078906256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558279 (or 558273 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 166078906256 in words is "one hundred sixty-six billion, seventy-eight million, nine hundred six thousand, two hundred fifty-six".