913640216597 has 2 divisors, whose sum is σ = 913640216598. Its totient is φ = 913640216596.

The previous prime is 913640216549. The next prime is 913640216603. The reversal of 913640216597 is 795612046319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 463142858116 + 450497358481 = 680546^2 + 671191^2 .

It is a cyclic number.

It is not a de Polignac number, because 913640216597 - 2¹⁸ = 913639954453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913640216507) 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, 456820108298 + 456820108299.

It is an arithmetic number, because the mean of its divisors is an integer number (456820108299).

Almost surely, 2^913640216597 is an apocalyptic number.

It is an amenable number.

913640216597 is a deficient number, since it is larger than the sum of its proper divisors (1).

913640216597 is an equidigital number, since it uses as much as digits as its factorization.

913640216597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 913640216597 in words is "nine hundred thirteen billion, six hundred forty million, two hundred sixteen thousand, five hundred ninety-seven".