610999581317 has 2 divisors, whose sum is σ = 610999581318. Its totient is φ = 610999581316.

The previous prime is 610999581211. The next prime is 610999581373. The reversal of 610999581317 is 713185999016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406943202241 + 204056379076 = 637921^2 + 451726^2 .

It is a cyclic number.

It is not a de Polignac number, because 610999581317 - 2³⁸ = 336121674373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610999581377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305499790658 + 305499790659.

It is an arithmetic number, because the mean of its divisors is an integer number (305499790659).

Almost surely, 2^610999581317 is an apocalyptic number.

It is an amenable number.

610999581317 is a deficient number, since it is larger than the sum of its proper divisors (1).

610999581317 is an equidigital number, since it uses as much as digits as its factorization.

610999581317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3674160, while the sum is 59.

The spelling of 610999581317 in words is "six hundred ten billion, nine hundred ninety-nine million, five hundred eighty-one thousand, three hundred seventeen".