82021028659 has 2 divisors, whose sum is σ = 82021028660. Its totient is φ = 82021028658.

The previous prime is 82021028653. The next prime is 82021028711. The reversal of 82021028659 is 95682012028.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82021028659 - 2⁹ = 82021028147 is a prime.

It is not a weakly prime, because it can be changed into another prime (82021028653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41010514329 + 41010514330.

It is an arithmetic number, because the mean of its divisors is an integer number (41010514330).

Almost surely, 2^82021028659 is an apocalyptic number.

82021028659 is a deficient number, since it is larger than the sum of its proper divisors (1).

82021028659 is an equidigital number, since it uses as much as digits as its factorization.

82021028659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 82021028659 in words is "eighty-two billion, twenty-one million, twenty-eight thousand, six hundred fifty-nine".