65783844037 has 2 divisors, whose sum is σ = 65783844038. Its totient is φ = 65783844036.

The previous prime is 65783844031. The next prime is 65783844107. The reversal of 65783844037 is 73044838756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61491104676 + 4292739361 = 247974^2 + 65519^2 .

It is a cyclic number.

It is not a de Polignac number, because 65783844037 - 2³ = 65783844029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65783844031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891922018 + 32891922019.

It is an arithmetic number, because the mean of its divisors is an integer number (32891922019).

Almost surely, 2^65783844037 is an apocalyptic number.

It is an amenable number.

65783844037 is a deficient number, since it is larger than the sum of its proper divisors (1).

65783844037 is an equidigital number, since it uses as much as digits as its factorization.

65783844037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 65783844037 in words is "sixty-five billion, seven hundred eighty-three million, eight hundred forty-four thousand, thirty-seven".