82449367817 has 2 divisors, whose sum is σ = 82449367818. Its totient is φ = 82449367816.

The previous prime is 82449367807. The next prime is 82449367823. The reversal of 82449367817 is 71876394428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73443168016 + 9006199801 = 271004^2 + 94901^2 .

It is a cyclic number.

It is not a de Polignac number, because 82449367817 - 2¹⁰ = 82449366793 is a prime.

It is a super-3 number, since 3×82449367817³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (82449367807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41224683908 + 41224683909.

It is an arithmetic number, because the mean of its divisors is an integer number (41224683909).

Almost surely, 2^82449367817 is an apocalyptic number.

It is an amenable number.

82449367817 is a deficient number, since it is larger than the sum of its proper divisors (1).

82449367817 is an equidigital number, since it uses as much as digits as its factorization.

82449367817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 59.

The spelling of 82449367817 in words is "eighty-two billion, four hundred forty-nine million, three hundred sixty-seven thousand, eight hundred seventeen".