64516676717 has 2 divisors, whose sum is σ = 64516676718. Its totient is φ = 64516676716.

The previous prime is 64516676683. The next prime is 64516676729. The reversal of 64516676717 is 71767661546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49892369956 + 14624306761 = 223366^2 + 120931^2 .

It is a cyclic number.

It is not a de Polignac number, because 64516676717 - 2¹⁴ = 64516660333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64516676767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32258338358 + 32258338359.

It is an arithmetic number, because the mean of its divisors is an integer number (32258338359).

Almost surely, 2^64516676717 is an apocalyptic number.

It is an amenable number.

64516676717 is a deficient number, since it is larger than the sum of its proper divisors (1).

64516676717 is an equidigital number, since it uses as much as digits as its factorization.

64516676717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 56.

The spelling of 64516676717 in words is "sixty-four billion, five hundred sixteen million, six hundred seventy-six thousand, seven hundred seventeen".