82787336647 has 2 divisors, whose sum is σ = 82787336648. Its totient is φ = 82787336646.

The previous prime is 82787336629. The next prime is 82787336669. The reversal of 82787336647 is 74663378728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82787336647 - 2¹⁹ = 82786812359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82787339647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41393668323 + 41393668324.

It is an arithmetic number, because the mean of its divisors is an integer number (41393668324).

Almost surely, 2^82787336647 is an apocalyptic number.

82787336647 is a deficient number, since it is larger than the sum of its proper divisors (1).

82787336647 is an equidigital number, since it uses as much as digits as its factorization.

82787336647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56899584, while the sum is 61.

The spelling of 82787336647 in words is "eighty-two billion, seven hundred eighty-seven million, three hundred thirty-six thousand, six hundred forty-seven".