11444516643 has 16 divisors (see below), whose sum is σ = 17472624896. Its totient is φ = 6527213280.

The previous prime is 11444516641. The next prime is 11444516653. The reversal of 11444516643 is 34661544411.

11444516643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11444516643 - 2¹ = 11444516641 is a prime.

It is a super-2 number, since 2×11444516643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11444516641) 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 in 15 ways as a sum of consecutive naturals, for example, 510028 + ... + 531993.

It is an arithmetic number, because the mean of its divisors is an integer number (1092039056).

Almost surely, 2^11444516643 is an apocalyptic number.

11444516643 is a deficient number, since it is larger than the sum of its proper divisors (6028108253).

11444516643 is a wasteful number, since it uses less digits than its factorization.

11444516643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042554.

The product of its digits is 138240, while the sum is 39.

The spelling of 11444516643 in words is "eleven billion, four hundred forty-four million, five hundred sixteen thousand, six hundred forty-three".