11772381013 has 2 divisors, whose sum is σ = 11772381014. Its totient is φ = 11772381012.

The previous prime is 11772381011. The next prime is 11772381077. The reversal of 11772381013 is 31018327711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11754462724 + 17918289 = 108418^2 + 4233^2 .

It is a cyclic number.

It is not a de Polignac number, because 11772381013 - 2¹ = 11772381011 is a prime.

Together with 11772381011, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11772381013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11772381011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5886190506 + 5886190507.

It is an arithmetic number, because the mean of its divisors is an integer number (5886190507).

Almost surely, 2^11772381013 is an apocalyptic number.

It is an amenable number.

11772381013 is a deficient number, since it is larger than the sum of its proper divisors (1).

11772381013 is an equidigital number, since it uses as much as digits as its factorization.

11772381013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 11772381013 in words is "eleven billion, seven hundred seventy-two million, three hundred eighty-one thousand, thirteen".