65834911943819 has 2 divisors, whose sum is σ = 65834911943820. Its totient is φ = 65834911943818.

The previous prime is 65834911943789. The next prime is 65834911943893. The reversal of 65834911943819 is 91834911943856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65834911943819 - 2²⁴ = 65834895166603 is a prime.

It is a super-2 number, since 2×65834911943819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65834911943419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32917455971909 + 32917455971910.

It is an arithmetic number, because the mean of its divisors is an integer number (32917455971910).

Almost surely, 2^{65834911943819} is an apocalyptic number.

65834911943819 is a deficient number, since it is larger than the sum of its proper divisors (1).

65834911943819 is an equidigital number, since it uses as much as digits as its factorization.

65834911943819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201553920, while the sum is 71.

The spelling of 65834911943819 in words is "sixty-five trillion, eight hundred thirty-four billion, nine hundred eleven million, nine hundred forty-three thousand, eight hundred nineteen".