65198667811 has 2 divisors, whose sum is σ = 65198667812. Its totient is φ = 65198667810.

The previous prime is 65198667803. The next prime is 65198667839. The reversal of 65198667811 is 11876689156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65198667811 - 2³ = 65198667803 is a prime.

It is not a weakly prime, because it can be changed into another prime (65198667871) 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, 32599333905 + 32599333906.

It is an arithmetic number, because the mean of its divisors is an integer number (32599333906).

Almost surely, 2^65198667811 is an apocalyptic number.

65198667811 is a deficient number, since it is larger than the sum of its proper divisors (1).

65198667811 is an equidigital number, since it uses as much as digits as its factorization.

65198667811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 58.

The spelling of 65198667811 in words is "sixty-five billion, one hundred ninety-eight million, six hundred sixty-seven thousand, eight hundred eleven".