166214396660 has 72 divisors (see below), whose sum is σ = 397858718880. Its totient is φ = 58141369728.

The previous prime is 166214396659. The next prime is 166214396669. The reversal of 166214396660 is 66693412661.

It is a junction number, because it is equal to n+sod(n) for n = 166214396599 and 166214396608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166214396669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1229882 + ... + 1358321.

It is an arithmetic number, because the mean of its divisors is an integer number (5525815540).

Almost surely, 2^166214396660 is an apocalyptic number.

166214396660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166214396660 is an abundant number, since it is smaller than the sum of its proper divisors (231644322220).

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

166214396660 is a wasteful number, since it uses less digits than its factorization.

166214396660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588257 (or 2588242 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 166214396660 in words is "one hundred sixty-six billion, two hundred fourteen million, three hundred ninety-six thousand, six hundred sixty".