82317447620879 has 2 divisors, whose sum is σ = 82317447620880. Its totient is φ = 82317447620878.

The previous prime is 82317447620831. The next prime is 82317447620951. The reversal of 82317447620879 is 97802674471328.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82317447620879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82317447620279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41158723810439 + 41158723810440.

It is an arithmetic number, because the mean of its divisors is an integer number (41158723810440).

Almost surely, 2^{82317447620879} is an apocalyptic number.

82317447620879 is a deficient number, since it is larger than the sum of its proper divisors (1).

82317447620879 is an equidigital number, since it uses as much as digits as its factorization.

82317447620879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 227598336, while the sum is 68.

The spelling of 82317447620879 in words is "eighty-two trillion, three hundred seventeen billion, four hundred forty-seven million, six hundred twenty thousand, eight hundred seventy-nine".