65665500111019 has 2 divisors, whose sum is σ = 65665500111020. Its totient is φ = 65665500111018.

The previous prime is 65665500110983. The next prime is 65665500111173. The reversal of 65665500111019 is 91011100556656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65665500111019 - 2⁴³ = 56869407088811 is a prime.

It is a super-2 number, since 2×65665500111019² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65665500111019.

It is not a weakly prime, because it can be changed into another prime (65665500118019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32832750055509 + 32832750055510.

It is an arithmetic number, because the mean of its divisors is an integer number (32832750055510).

Almost surely, 2^{65665500111019} is an apocalyptic number.

65665500111019 is a deficient number, since it is larger than the sum of its proper divisors (1).

65665500111019 is an equidigital number, since it uses as much as digits as its factorization.

65665500111019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 46.

The spelling of 65665500111019 in words is "sixty-five trillion, six hundred sixty-five billion, five hundred million, one hundred eleven thousand, nineteen".