671968522662887 has 2 divisors, whose sum is σ = 671968522662888. Its totient is φ = 671968522662886.

The previous prime is 671968522662851. The next prime is 671968522662953. The reversal of 671968522662887 is 788266225869176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671968522662887 - 2⁸ = 671968522662631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671968522662847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335984261331443 + 335984261331444.

It is an arithmetic number, because the mean of its divisors is an integer number (335984261331444).

Almost surely, 2^{671968522662887} is an apocalyptic number.

671968522662887 is a deficient number, since it is larger than the sum of its proper divisors (1).

671968522662887 is an equidigital number, since it uses as much as digits as its factorization.

671968522662887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11705057280, while the sum is 83.

The spelling of 671968522662887 in words is "six hundred seventy-one trillion, nine hundred sixty-eight billion, five hundred twenty-two million, six hundred sixty-two thousand, eight hundred eighty-seven".