166700370187 has 6 divisors (see below), whose sum is σ = 180509868492. Its totient is φ = 153877264632.

The previous prime is 166700370131. The next prime is 166700370191. The reversal of 166700370187 is 781073007661.

It is a de Polignac number, because none of the positive numbers 2^k-166700370187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166700370197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 493196193 + ... + 493196530.

It is an arithmetic number, because the mean of its divisors is an integer number (30084978082).

Almost surely, 2^166700370187 is an apocalyptic number.

166700370187 is a deficient number, since it is larger than the sum of its proper divisors (13809498305).

166700370187 is an equidigital number, since it uses as much as digits as its factorization.

166700370187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986392749 (or 986392736 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 166700370187 in words is "one hundred sixty-six billion, seven hundred million, three hundred seventy thousand, one hundred eighty-seven".