166274810063128 has 128 divisors (see below), whose sum is σ = 359816508979200. Its totient is φ = 71350543190016.

The previous prime is 166274810063119. The next prime is 166274810063147. The reversal of 166274810063128 is 821360018472661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1605180825 + ... + 1605284407.

It is an arithmetic number, because the mean of its divisors is an integer number (2811066476400).

Almost surely, 2^{166274810063128} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166274810063128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179908254489600).

166274810063128 is an abundant number, since it is smaller than the sum of its proper divisors (193541698916072).

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

166274810063128 is a wasteful number, since it uses less digits than its factorization.

166274810063128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114641 (or 114637 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 166274810063128 in words is "one hundred sixty-six trillion, two hundred seventy-four billion, eight hundred ten million, sixty-three thousand, one hundred twenty-eight".