11664211243 has 2 divisors, whose sum is σ = 11664211244. Its totient is φ = 11664211242.

The previous prime is 11664211193. The next prime is 11664211259. The reversal of 11664211243 is 34211246611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11664211243 - 2²¹ = 11662114091 is a prime.

It is not a weakly prime, because it can be changed into another prime (11664212243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832105621 + 5832105622.

It is an arithmetic number, because the mean of its divisors is an integer number (5832105622).

Almost surely, 2^11664211243 is an apocalyptic number.

11664211243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11664211243 is an equidigital number, since it uses as much as digits as its factorization.

11664211243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

Adding to 11664211243 its reverse (34211246611), we get a palindrome (45875457854).

The spelling of 11664211243 in words is "eleven billion, six hundred sixty-four million, two hundred eleven thousand, two hundred forty-three".