11428919665784 has 16 divisors (see below), whose sum is σ = 21429435075720. Its totient is φ = 5714403645600.

The previous prime is 11428919665739. The next prime is 11428919665841. The reversal of 11428919665784 is 48756691982411.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6152579 + ... + 7791794.

Almost surely, 2^{11428919665784} is an apocalyptic number.

It is an amenable number.

11428919665784 is a deficient number, since it is larger than the sum of its proper divisors (10000515409936).

11428919665784 is a wasteful number, since it uses less digits than its factorization.

11428919665784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14046830 (or 14046826 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 71.

The spelling of 11428919665784 in words is "eleven trillion, four hundred twenty-eight billion, nine hundred nineteen million, six hundred sixty-five thousand, seven hundred eighty-four".