65782194389 has 2 divisors, whose sum is σ = 65782194390. Its totient is φ = 65782194388.

The previous prime is 65782194377. The next prime is 65782194403. The reversal of 65782194389 is 98349128756.

65782194389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49309755364 + 16472439025 = 222058^2 + 128345^2 .

It is a cyclic number.

It is not a de Polignac number, because 65782194389 - 2⁸ = 65782194133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65782190389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891097194 + 32891097195.

It is an arithmetic number, because the mean of its divisors is an integer number (32891097195).

Almost surely, 2^65782194389 is an apocalyptic number.

It is an amenable number.

65782194389 is a deficient number, since it is larger than the sum of its proper divisors (1).

65782194389 is an equidigital number, since it uses as much as digits as its factorization.

65782194389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 62.

The spelling of 65782194389 in words is "sixty-five billion, seven hundred eighty-two million, one hundred ninety-four thousand, three hundred eighty-nine".