11772381011 has 2 divisors, whose sum is σ = 11772381012. Its totient is φ = 11772381010.

The previous prime is 11772381007. The next prime is 11772381013. The reversal of 11772381011 is 11018327711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11772381011 - 2² = 11772381007 is a prime.

It is a Sophie Germain prime.

Together with 11772381013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11772381013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886190505 + 5886190506.

It is an arithmetic number, because the mean of its divisors is an integer number (5886190506).

Almost surely, 2^11772381011 is an apocalyptic number.

11772381011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11772381011 is an equidigital number, since it uses as much as digits as its factorization.

11772381011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 32.

The spelling of 11772381011 in words is "eleven billion, seven hundred seventy-two million, three hundred eighty-one thousand, eleven".