166918206150 has 144 divisors (see below), whose sum is σ = 455192794368. Its totient is φ = 43843800000.

The previous prime is 166918206127. The next prime is 166918206167. The reversal of 166918206150 is 51602819661.

166918206150 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 1 + 8 + 20 + 615 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 166918206096 and 166918206105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51342025 + ... + 51345275.

It is an arithmetic number, because the mean of its divisors is an integer number (3161061072).

Almost surely, 2^166918206150 is an apocalyptic number.

166918206150 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 166918206150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227596397184).

166918206150 is an abundant number, since it is smaller than the sum of its proper divisors (288274588218).

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

166918206150 is a wasteful number, since it uses less digits than its factorization.

166918206150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4947 (or 4939 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 166918206150 in words is "one hundred sixty-six billion, nine hundred eighteen million, two hundred six thousand, one hundred fifty".