671097315839 has 2 divisors, whose sum is σ = 671097315840. Its totient is φ = 671097315838.

The previous prime is 671097315799. The next prime is 671097315893. The reversal of 671097315839 is 938513790176.

Together with next prime (671097315893) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671097315839 - 2²⁰ = 671096267263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671097365839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335548657919 + 335548657920.

It is an arithmetic number, because the mean of its divisors is an integer number (335548657920).

Almost surely, 2^671097315839 is an apocalyptic number.

671097315839 is a deficient number, since it is larger than the sum of its proper divisors (1).

671097315839 is an equidigital number, since it uses as much as digits as its factorization.

671097315839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 59.

The spelling of 671097315839 in words is "six hundred seventy-one billion, ninety-seven million, three hundred fifteen thousand, eight hundred thirty-nine".