666849230371 has 2 divisors, whose sum is σ = 666849230372. Its totient is φ = 666849230370.

The previous prime is 666849230353. The next prime is 666849230387. The reversal of 666849230371 is 173032948666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666849230371 - 2⁹ = 666849229859 is a prime.

It is a super-3 number, since 3×666849230371³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (666849240371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333424615185 + 333424615186.

It is an arithmetic number, because the mean of its divisors is an integer number (333424615186).

Almost surely, 2^666849230371 is an apocalyptic number.

666849230371 is a deficient number, since it is larger than the sum of its proper divisors (1).

666849230371 is an equidigital number, since it uses as much as digits as its factorization.

666849230371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 666849230371 in words is "six hundred sixty-six billion, eight hundred forty-nine million, two hundred thirty thousand, three hundred seventy-one".