166061974896 has 120 divisors (see below), whose sum is σ = 473461422720. Its totient is φ = 54318902400.

The previous prime is 166061974889. The next prime is 166061974909. The reversal of 166061974896 is 698479160661.

166061974896 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 61 + 97 + 489 + 6 = 666.

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, 4834101 + ... + 4868331.

It is an arithmetic number, because the mean of its divisors is an integer number (3945511856).

Almost surely, 2^166061974896 is an apocalyptic number.

166061974896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166061974896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236730711360).

166061974896 is an abundant number, since it is smaller than the sum of its proper divisors (307399447824).

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

166061974896 is a wasteful number, since it uses less digits than its factorization.

166061974896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34875 (or 34866 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 166061974896 in words is "one hundred sixty-six billion, sixty-one million, nine hundred seventy-four thousand, eight hundred ninety-six".