666098564273 has 2 divisors, whose sum is σ = 666098564274. Its totient is φ = 666098564272.

The previous prime is 666098564269. The next prime is 666098564371. The reversal of 666098564273 is 372465890666.

It is a happy number.

666098564273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546670954384 + 119427609889 = 739372^2 + 345583^2 .

It is a cyclic number.

It is not a de Polignac number, because 666098564273 - 2² = 666098564269 is a prime.

It is not a weakly prime, because it can be changed into another prime (666098569273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333049282136 + 333049282137.

It is an arithmetic number, because the mean of its divisors is an integer number (333049282137).

Almost surely, 2^666098564273 is an apocalyptic number.

It is an amenable number.

666098564273 is a deficient number, since it is larger than the sum of its proper divisors (1).

666098564273 is an equidigital number, since it uses as much as digits as its factorization.

666098564273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 62.

The spelling of 666098564273 in words is "six hundred sixty-six billion, ninety-eight million, five hundred sixty-four thousand, two hundred seventy-three".