82668057565567 has 2 divisors, whose sum is σ = 82668057565568. Its totient is φ = 82668057565566.

The previous prime is 82668057565531. The next prime is 82668057565573. The reversal of 82668057565567 is 76556575086628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82668057565567 - 2³¹ = 82665910081919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82668057565493 and 82668057565502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82668057575567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41334028782783 + 41334028782784.

It is an arithmetic number, because the mean of its divisors is an integer number (41334028782784).

Almost surely, 2^{82668057565567} is an apocalyptic number.

82668057565567 is a deficient number, since it is larger than the sum of its proper divisors (1).

82668057565567 is an equidigital number, since it uses as much as digits as its factorization.

82668057565567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320000, while the sum is 76.

The spelling of 82668057565567 in words is "eighty-two trillion, six hundred sixty-eight billion, fifty-seven million, five hundred sixty-five thousand, five hundred sixty-seven".