65500017911 has 2 divisors, whose sum is σ = 65500017912. Its totient is φ = 65500017910.

The previous prime is 65500017907. The next prime is 65500017937. The reversal of 65500017911 is 11971000556.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65500017911 - 2² = 65500017907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65500017991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32750008955 + 32750008956.

It is an arithmetic number, because the mean of its divisors is an integer number (32750008956).

Almost surely, 2^65500017911 is an apocalyptic number.

65500017911 is a deficient number, since it is larger than the sum of its proper divisors (1).

65500017911 is an equidigital number, since it uses as much as digits as its factorization.

65500017911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 35.

The spelling of 65500017911 in words is "sixty-five billion, five hundred million, seventeen thousand, nine hundred eleven".