11279684464 has 20 divisors (see below), whose sum is σ = 22131028960. Its totient is φ = 5568451200.

The previous prime is 11279684461. The next prime is 11279684491. The reversal of 11279684464 is 46448697211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11279684461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4460637 + ... + 4463164.

It is an arithmetic number, because the mean of its divisors is an integer number (1106551448).

Almost surely, 2^11279684464 is an apocalyptic number.

It is an amenable number.

11279684464 is a deficient number, since it is larger than the sum of its proper divisors (10851344496).

11279684464 is an equidigital number, since it uses as much as digits as its factorization.

11279684464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923888 (or 8923882 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The spelling of 11279684464 in words is "eleven billion, two hundred seventy-nine million, six hundred eighty-four thousand, four hundred sixty-four".