671004289734791 has 2 divisors, whose sum is σ = 671004289734792. Its totient is φ = 671004289734790.

The previous prime is 671004289734773. The next prime is 671004289734833. The reversal of 671004289734791 is 197437982400176.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671004289734791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671004289734731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335502144867395 + 335502144867396.

It is an arithmetic number, because the mean of its divisors is an integer number (335502144867396).

Almost surely, 2^{671004289734791} is an apocalyptic number.

671004289734791 is a deficient number, since it is larger than the sum of its proper divisors (1).

671004289734791 is an equidigital number, since it uses as much as digits as its factorization.

671004289734791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 671004289734791 in words is "six hundred seventy-one trillion, four billion, two hundred eighty-nine million, seven hundred thirty-four thousand, seven hundred ninety-one".