166886702730 has 256 divisors, whose sum is σ = 522932889600. Its totient is φ = 37436152320.

The previous prime is 166886702681. The next prime is 166886702767. The reversal of 166886702730 is 37207688661.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2392102 + ... + 2460878.

It is an arithmetic number, because the mean of its divisors is an integer number (2042706600).

Almost surely, 2^166886702730 is an apocalyptic number.

166886702730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166886702730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261466444800).

166886702730 is an abundant number, since it is smaller than the sum of its proper divisors (356046186870).

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

166886702730 is a wasteful number, since it uses less digits than its factorization.

166886702730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68866 (or 68860 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 166886702730 in words is "one hundred sixty-six billion, eight hundred eighty-six million, seven hundred two thousand, seven hundred thirty".