65647617319 has 2 divisors, whose sum is σ = 65647617320. Its totient is φ = 65647617318.

The previous prime is 65647617227. The next prime is 65647617353. The reversal of 65647617319 is 91371674656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65647617319 - 2²¹ = 65645520167 is a prime.

It is a super-2 number, since 2×65647617319² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65647617319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65647657319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32823808659 + 32823808660.

It is an arithmetic number, because the mean of its divisors is an integer number (32823808660).

Almost surely, 2^65647617319 is an apocalyptic number.

65647617319 is a deficient number, since it is larger than the sum of its proper divisors (1).

65647617319 is an equidigital number, since it uses as much as digits as its factorization.

65647617319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 55.

The spelling of 65647617319 in words is "sixty-five billion, six hundred forty-seven million, six hundred seventeen thousand, three hundred nineteen".