82557530808287 has 2 divisors, whose sum is σ = 82557530808288. Its totient is φ = 82557530808286.

The previous prime is 82557530808283. The next prime is 82557530808419. The reversal of 82557530808287 is 78280803575528.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82557530808287 - 2² = 82557530808283 is a prime.

It is a super-2 number, since 2×82557530808287² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82557530808283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41278765404143 + 41278765404144.

It is an arithmetic number, because the mean of its divisors is an integer number (41278765404144).

Almost surely, 2^{82557530808287} is an apocalyptic number.

82557530808287 is a deficient number, since it is larger than the sum of its proper divisors (1).

82557530808287 is an equidigital number, since it uses as much as digits as its factorization.

82557530808287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056000, while the sum is 68.

The spelling of 82557530808287 in words is "eighty-two trillion, five hundred fifty-seven billion, five hundred thirty million, eight hundred eight thousand, two hundred eighty-seven".