671888994263 has 2 divisors, whose sum is σ = 671888994264. Its totient is φ = 671888994262.

The previous prime is 671888994229. The next prime is 671888994277. The reversal of 671888994263 is 362499888176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671888994263 - 2⁶ = 671888994199 is a prime.

It is a super-2 number, since 2×671888994263² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671888904263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335944497131 + 335944497132.

It is an arithmetic number, because the mean of its divisors is an integer number (335944497132).

Almost surely, 2^671888994263 is an apocalyptic number.

671888994263 is a deficient number, since it is larger than the sum of its proper divisors (1).

671888994263 is an equidigital number, since it uses as much as digits as its factorization.

671888994263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250822656, while the sum is 71.

The spelling of 671888994263 in words is "six hundred seventy-one billion, eight hundred eighty-eight million, nine hundred ninety-four thousand, two hundred sixty-three".