11232978445571 has 2 divisors, whose sum is σ = 11232978445572. Its totient is φ = 11232978445570.

The previous prime is 11232978445501. The next prime is 11232978445573. The reversal of 11232978445571 is 17554487923211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11232978445571 is a prime.

It is a Sophie Germain prime.

Together with 11232978445573, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11232978445571.

It is not a weakly prime, because it can be changed into another prime (11232978445573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616489222785 + 5616489222786.

It is an arithmetic number, because the mean of its divisors is an integer number (5616489222786).

Almost surely, 2^{11232978445571} is an apocalyptic number.

11232978445571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11232978445571 is an equidigital number, since it uses as much as digits as its factorization.

11232978445571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 59.

The spelling of 11232978445571 in words is "eleven trillion, two hundred thirty-two billion, nine hundred seventy-eight million, four hundred forty-five thousand, five hundred seventy-one".