617982078319 has 2 divisors, whose sum is σ = 617982078320. Its totient is φ = 617982078318.

The previous prime is 617982078257. The next prime is 617982078361. The reversal of 617982078319 is 913870289716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 617982078319 - 2²⁵ = 617948523887 is a prime.

It is a super-2 number, since 2×617982078319² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617982078419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308991039159 + 308991039160.

It is an arithmetic number, because the mean of its divisors is an integer number (308991039160).

Almost surely, 2^617982078319 is an apocalyptic number.

617982078319 is a deficient number, since it is larger than the sum of its proper divisors (1).

617982078319 is an equidigital number, since it uses as much as digits as its factorization.

617982078319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 617982078319 in words is "six hundred seventeen billion, nine hundred eighty-two million, seventy-eight thousand, three hundred nineteen".