65785633211 has 2 divisors, whose sum is σ = 65785633212. Its totient is φ = 65785633210.

The previous prime is 65785633073. The next prime is 65785633217. The reversal of 65785633211 is 11233658756.

65785633211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65785633211 is a prime.

It is not a weakly prime, because it can be changed into another prime (65785633217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32892816605 + 32892816606.

It is an arithmetic number, because the mean of its divisors is an integer number (32892816606).

Almost surely, 2^65785633211 is an apocalyptic number.

65785633211 is a deficient number, since it is larger than the sum of its proper divisors (1).

65785633211 is an equidigital number, since it uses as much as digits as its factorization.

65785633211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The spelling of 65785633211 in words is "sixty-five billion, seven hundred eighty-five million, six hundred thirty-three thousand, two hundred eleven".