166852016917 has 4 divisors (see below), whose sum is σ = 166854604320. Its totient is φ = 166849429516.

The previous prime is 166852016893. The next prime is 166852016921. The reversal of 166852016917 is 719610258661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166852016917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166852016977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194433 + ... + 1326790.

It is an arithmetic number, because the mean of its divisors is an integer number (41713651080).

Almost surely, 2^166852016917 is an apocalyptic number.

It is an amenable number.

166852016917 is a deficient number, since it is larger than the sum of its proper divisors (2587403).

166852016917 is an equidigital number, since it uses as much as digits as its factorization.

166852016917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587402.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 166852016917 in words is "one hundred sixty-six billion, eight hundred fifty-two million, sixteen thousand, nine hundred seventeen".