166916750850 has 144 divisors (see below), whose sum is σ = 475224048000. Its totient is φ = 41885112960.

The previous prime is 166916750843. The next prime is 166916750881. The reversal of 166916750850 is 58057619661.

166916750850 is a `hidden beast` number, since 16 + 69 + 1 + 67 + 508 + 5 + 0 = 666.

166916750850 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166916750850² (a number of 23 digits) contains 22 as substring.

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, 1208439 + ... + 1339461.

It is an arithmetic number, because the mean of its divisors is an integer number (3300167000).

Almost surely, 2^166916750850 is an apocalyptic number.

166916750850 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 166916750850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237612024000).

166916750850 is an abundant number, since it is smaller than the sum of its proper divisors (308307297150).

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

166916750850 is a wasteful number, since it uses less digits than its factorization.

166916750850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131209 (or 131201 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 166916750850 in words is "one hundred sixty-six billion, nine hundred sixteen million, seven hundred fifty thousand, eight hundred fifty".