166254262969 has 2 divisors, whose sum is σ = 166254262970. Its totient is φ = 166254262968.

The previous prime is 166254262877. The next prime is 166254263023. The reversal of 166254262969 is 969262452661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90237156025 + 76017106944 = 300395^2 + 275712^2 .

It is a cyclic number.

It is not a de Polignac number, because 166254262969 - 2⁷ = 166254262841 is a prime.

It is a super-2 number, since 2×166254262969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166254268969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83127131484 + 83127131485.

It is an arithmetic number, because the mean of its divisors is an integer number (83127131485).

Almost surely, 2^166254262969 is an apocalyptic number.

It is an amenable number.

166254262969 is a deficient number, since it is larger than the sum of its proper divisors (1).

166254262969 is an equidigital number, since it uses as much as digits as its factorization.

166254262969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 58.

The spelling of 166254262969 in words is "one hundred sixty-six billion, two hundred fifty-four million, two hundred sixty-two thousand, nine hundred sixty-nine".