64165231211 has 2 divisors, whose sum is σ = 64165231212. Its totient is φ = 64165231210.

The previous prime is 64165231073. The next prime is 64165231231. The reversal of 64165231211 is 11213256146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64165231211 - 2³⁴ = 46985362027 is a prime.

It is a super-2 number, since 2×64165231211² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64165231231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32082615605 + 32082615606.

It is an arithmetic number, because the mean of its divisors is an integer number (32082615606).

Almost surely, 2^64165231211 is an apocalyptic number.

64165231211 is a deficient number, since it is larger than the sum of its proper divisors (1).

64165231211 is an equidigital number, since it uses as much as digits as its factorization.

64165231211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

Adding to 64165231211 its reverse (11213256146), we get a palindrome (75378487357).

The spelling of 64165231211 in words is "sixty-four billion, one hundred sixty-five million, two hundred thirty-one thousand, two hundred eleven".