82317447620693 has 2 divisors, whose sum is σ = 82317447620694. Its totient is φ = 82317447620692.

The previous prime is 82317447620633. The next prime is 82317447620719. The reversal of 82317447620693 is 39602674471328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68243080117969 + 14074367502724 = 8260937^2 + 3751582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82317447620693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82317447620633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41158723810346 + 41158723810347.

It is an arithmetic number, because the mean of its divisors is an integer number (41158723810347).

Almost surely, 2^{82317447620693} is an apocalyptic number.

It is an amenable number.

82317447620693 is a deficient number, since it is larger than the sum of its proper divisors (1).

82317447620693 is an equidigital number, since it uses as much as digits as its factorization.

82317447620693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73156608, while the sum is 62.

The spelling of 82317447620693 in words is "eighty-two trillion, three hundred seventeen billion, four hundred forty-seven million, six hundred twenty thousand, six hundred ninety-three".