82506499913687 has 2 divisors, whose sum is σ = 82506499913688. Its totient is φ = 82506499913686.

The previous prime is 82506499913659. The next prime is 82506499913693. The reversal of 82506499913687 is 78631999460528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82506499913687 - 2²⁰ = 82506498865111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82506499213687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41253249956843 + 41253249956844.

It is an arithmetic number, because the mean of its divisors is an integer number (41253249956844).

It is a 2-persistent number, because it is pandigital, and so is 2⋅82506499913687 = 165012999827374, but 3⋅82506499913687 = 247519499741061 is not.

Almost surely, 2^{82506499913687} is an apocalyptic number.

82506499913687 is a deficient number, since it is larger than the sum of its proper divisors (1).

82506499913687 is an equidigital number, since it uses as much as digits as its factorization.

82506499913687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1410877440, while the sum is 77.

The spelling of 82506499913687 in words is "eighty-two trillion, five hundred six billion, four hundred ninety-nine million, nine hundred thirteen thousand, six hundred eighty-seven".