65782208449 has 2 divisors, whose sum is σ = 65782208450. Its totient is φ = 65782208448.

The previous prime is 65782208423. The next prime is 65782208473. The reversal of 65782208449 is 94480228756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59567724225 + 6214484224 = 244065^2 + 78832^2 .

It is a cyclic number.

It is not a de Polignac number, because 65782208449 - 2⁷ = 65782208321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65782208449.

It is not a weakly prime, because it can be changed into another prime (65782202449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891104224 + 32891104225.

It is an arithmetic number, because the mean of its divisors is an integer number (32891104225).

Almost surely, 2^65782208449 is an apocalyptic number.

It is an amenable number.

65782208449 is a deficient number, since it is larger than the sum of its proper divisors (1).

65782208449 is an equidigital number, since it uses as much as digits as its factorization.

65782208449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 65782208449 in words is "sixty-five billion, seven hundred eighty-two million, two hundred eight thousand, four hundred forty-nine".