166746092399 has 2 divisors, whose sum is σ = 166746092400. Its totient is φ = 166746092398.

The previous prime is 166746092393. The next prime is 166746092477. The reversal of 166746092399 is 993290647661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166746092399 - 2³² = 162451125103 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166746092393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83373046199 + 83373046200.

It is an arithmetic number, because the mean of its divisors is an integer number (83373046200).

Almost surely, 2^166746092399 is an apocalyptic number.

166746092399 is a deficient number, since it is larger than the sum of its proper divisors (1).

166746092399 is an equidigital number, since it uses as much as digits as its factorization.

166746092399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26453952, while the sum is 62.

The spelling of 166746092399 in words is "one hundred sixty-six billion, seven hundred forty-six million, ninety-two thousand, three hundred ninety-nine".