82665210818539 has 2 divisors, whose sum is σ = 82665210818540. Its totient is φ = 82665210818538.

The previous prime is 82665210818461. The next prime is 82665210818557. The reversal of 82665210818539 is 93581801256628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82665210818539 - 2⁴⁵ = 47480838729707 is a prime.

It is not a weakly prime, because it can be changed into another prime (82665210818569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41332605409269 + 41332605409270.

It is an arithmetic number, because the mean of its divisors is an integer number (41332605409270).

Almost surely, 2^{82665210818539} is an apocalyptic number.

82665210818539 is a deficient number, since it is larger than the sum of its proper divisors (1).

82665210818539 is an equidigital number, since it uses as much as digits as its factorization.

82665210818539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 64.

The spelling of 82665210818539 in words is "eighty-two trillion, six hundred sixty-five billion, two hundred ten million, eight hundred eighteen thousand, five hundred thirty-nine".