166351250145701 has 2 divisors, whose sum is σ = 166351250145702. Its totient is φ = 166351250145700.

The previous prime is 166351250145527. The next prime is 166351250145713. The reversal of 166351250145701 is 107541052153661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165762921261025 + 588328884676 = 12874895^2 + 767026^2 .

It is a cyclic number.

It is not a de Polignac number, because 166351250145701 - 2³⁸ = 166076372238757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166351250145001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83175625072850 + 83175625072851.

It is an arithmetic number, because the mean of its divisors is an integer number (83175625072851).

Almost surely, 2^{166351250145701} is an apocalyptic number.

It is an amenable number.

166351250145701 is a deficient number, since it is larger than the sum of its proper divisors (1).

166351250145701 is an equidigital number, since it uses as much as digits as its factorization.

166351250145701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 166351250145701 in words is "one hundred sixty-six trillion, three hundred fifty-one billion, two hundred fifty million, one hundred forty-five thousand, seven hundred one".