82528368569 has 2 divisors, whose sum is σ = 82528368570. Its totient is φ = 82528368568.

The previous prime is 82528368541. The next prime is 82528368647. The reversal of 82528368569 is 96586382528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43388890000 + 39139478569 = 208300^2 + 197837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82528368569 is a prime.

It is a super-2 number, since 2×82528368569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82528361569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41264184284 + 41264184285.

It is an arithmetic number, because the mean of its divisors is an integer number (41264184285).

Almost surely, 2^82528368569 is an apocalyptic number.

It is an amenable number.

82528368569 is a deficient number, since it is larger than the sum of its proper divisors (1).

82528368569 is an equidigital number, since it uses as much as digits as its factorization.

82528368569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49766400, while the sum is 62.

The spelling of 82528368569 in words is "eighty-two billion, five hundred twenty-eight million, three hundred sixty-eight thousand, five hundred sixty-nine".