11765681243 has 2 divisors, whose sum is σ = 11765681244. Its totient is φ = 11765681242.

The previous prime is 11765681237. The next prime is 11765681273. The reversal of 11765681243 is 34218656711.

11765681243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11765681243 - 2²² = 11761486939 is a prime.

It is a super-2 number, since 2×11765681243² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11765681194 and 11765681203.

It is not a weakly prime, because it can be changed into another prime (11765681233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5882840621 + 5882840622.

It is an arithmetic number, because the mean of its divisors is an integer number (5882840622).

Almost surely, 2^11765681243 is an apocalyptic number.

11765681243 is a deficient number, since it is larger than the sum of its proper divisors (1).

11765681243 is an equidigital number, since it uses as much as digits as its factorization.

11765681243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The spelling of 11765681243 in words is "eleven billion, seven hundred sixty-five million, six hundred eighty-one thousand, two hundred forty-three".