681275410199 has 2 divisors, whose sum is σ = 681275410200. Its totient is φ = 681275410198.

The previous prime is 681275410187. The next prime is 681275410201. The reversal of 681275410199 is 991014572186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681275410199 - 2³² = 676980442903 is a prime.

Together with 681275410201, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 681275410199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681275400199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340637705099 + 340637705100.

It is an arithmetic number, because the mean of its divisors is an integer number (340637705100).

Almost surely, 2^681275410199 is an apocalyptic number.

681275410199 is a deficient number, since it is larger than the sum of its proper divisors (1).

681275410199 is an equidigital number, since it uses as much as digits as its factorization.

681275410199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 681275410199 in words is "six hundred eighty-one billion, two hundred seventy-five million, four hundred ten thousand, one hundred ninety-nine".