166866837016 has 32 divisors (see below), whose sum is σ = 341464380480. Its totient is φ = 75816151200.

The previous prime is 166866837013. The next prime is 166866837023. The reversal of 166866837016 is 610738668661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166866837013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197430 + ... + 610501.

It is an arithmetic number, because the mean of its divisors is an integer number (10670761890).

Almost surely, 2^166866837016 is an apocalyptic number.

It is an amenable number.

166866837016 is an abundant number, since it is smaller than the sum of its proper divisors (174597543464).

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

166866837016 is a wasteful number, since it uses less digits than its factorization.

166866837016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810295 (or 810291 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 166866837016 in words is "one hundred sixty-six billion, eight hundred sixty-six million, eight hundred thirty-seven thousand, sixteen".