11819057784 has 32 divisors (see below), whose sum is σ = 29642064720. Its totient is φ = 3927096576.

The previous prime is 11819057779. The next prime is 11819057797. The reversal of 11819057784 is 48775091811.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 779167 + ... + 794190.

Almost surely, 2^11819057784 is an apocalyptic number.

It is an amenable number.

11819057784 is an abundant number, since it is smaller than the sum of its proper divisors (17823006936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11819057784 is a wasteful number, since it uses less digits than its factorization.

11819057784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573679 (or 1573675 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 51.

The spelling of 11819057784 in words is "eleven billion, eight hundred nineteen million, fifty-seven thousand, seven hundred eighty-four".