166311312907 has 2 divisors, whose sum is σ = 166311312908. Its totient is φ = 166311312906.

The previous prime is 166311312863. The next prime is 166311312941. The reversal of 166311312907 is 709213113661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166311312907 - 2⁷ = 166311312779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166311312907.

It is not a weakly prime, because it can be changed into another prime (166311312977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83155656453 + 83155656454.

It is an arithmetic number, because the mean of its divisors is an integer number (83155656454).

Almost surely, 2^166311312907 is an apocalyptic number.

166311312907 is a deficient number, since it is larger than the sum of its proper divisors (1).

166311312907 is an equidigital number, since it uses as much as digits as its factorization.

166311312907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 166311312907 in words is "one hundred sixty-six billion, three hundred eleven million, three hundred twelve thousand, nine hundred seven".