82665283817639 has 2 divisors, whose sum is σ = 82665283817640. Its totient is φ = 82665283817638.

The previous prime is 82665283817621. The next prime is 82665283817653. The reversal of 82665283817639 is 93671838256628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82665283817639 - 2²⁰ = 82665282769063 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82665283817689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41332641908819 + 41332641908820.

It is an arithmetic number, because the mean of its divisors is an integer number (41332641908820).

Almost surely, 2^{82665283817639} is an apocalyptic number.

82665283817639 is a deficient number, since it is larger than the sum of its proper divisors (1).

82665283817639 is an equidigital number, since it uses as much as digits as its factorization.

82665283817639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1254113280, while the sum is 74.

The spelling of 82665283817639 in words is "eighty-two trillion, six hundred sixty-five billion, two hundred eighty-three million, eight hundred seventeen thousand, six hundred thirty-nine".