166411975926 has 48 divisors (see below), whose sum is σ = 390995918640. Its totient is φ = 47075515200.

The previous prime is 166411975883. The next prime is 166411975963. The reversal of 166411975926 is 629579114661.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2772421 + ... + 2831808.

It is an arithmetic number, because the mean of its divisors is an integer number (8145748305).

Almost surely, 2^166411975926 is an apocalyptic number.

166411975926 is an abundant number, since it is smaller than the sum of its proper divisors (224583942714).

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

166411975926 is a wasteful number, since it uses less digits than its factorization.

166411975926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5604349 (or 5604342 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 57.

It can be divided in two parts, 1664119 and 75926, that added together give a triangular number (1740045 = T₁₈₆₅).

The spelling of 166411975926 in words is "one hundred sixty-six billion, four hundred eleven million, nine hundred seventy-five thousand, nine hundred twenty-six".