82523868989 has 2 divisors, whose sum is σ = 82523868990. Its totient is φ = 82523868988.

The previous prime is 82523868967. The next prime is 82523869009. The reversal of 82523868989 is 98986832528.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82393109764 + 130759225 = 287042^2 + 11435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82523868989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82523868919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41261934494 + 41261934495.

It is an arithmetic number, because the mean of its divisors is an integer number (41261934495).

Almost surely, 2^82523868989 is an apocalyptic number.

It is an amenable number.

82523868989 is a deficient number, since it is larger than the sum of its proper divisors (1).

82523868989 is an equidigital number, since it uses as much as digits as its factorization.

82523868989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119439360, while the sum is 68.

The spelling of 82523868989 in words is "eighty-two billion, five hundred twenty-three million, eight hundred sixty-eight thousand, nine hundred eighty-nine".