11442881647 has 2 divisors, whose sum is σ = 11442881648. Its totient is φ = 11442881646.

The previous prime is 11442881629. The next prime is 11442881677. The reversal of 11442881647 is 74618824411.

It is a weak prime.

It is an emirp because it is prime and its reverse (74618824411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11442881647 - 2⁷ = 11442881519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11442881597 and 11442881606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11442881617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721440823 + 5721440824.

It is an arithmetic number, because the mean of its divisors is an integer number (5721440824).

Almost surely, 2^11442881647 is an apocalyptic number.

11442881647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11442881647 is an equidigital number, since it uses as much as digits as its factorization.

11442881647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 344064, while the sum is 46.

The spelling of 11442881647 in words is "eleven billion, four hundred forty-two million, eight hundred eighty-one thousand, six hundred forty-seven".