646460559319 has 2 divisors, whose sum is σ = 646460559320. Its totient is φ = 646460559318.

The previous prime is 646460559317. The next prime is 646460559431. The reversal of 646460559319 is 913955064646.

It is a happy number.

646460559319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 646460559319 - 2¹ = 646460559317 is a prime.

It is a super-2 number, since 2×646460559319² (a number of 24 digits) contains 22 as substring.

Together with 646460559317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646460559317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323230279659 + 323230279660.

It is an arithmetic number, because the mean of its divisors is an integer number (323230279660).

Almost surely, 2^646460559319 is an apocalyptic number.

646460559319 is a deficient number, since it is larger than the sum of its proper divisors (1).

646460559319 is an equidigital number, since it uses as much as digits as its factorization.

646460559319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20995200, while the sum is 58.

The spelling of 646460559319 in words is "six hundred forty-six billion, four hundred sixty million, five hundred fifty-nine thousand, three hundred nineteen".