11778890684 has 18 divisors (see below), whose sum is σ = 22657329912. Its totient is φ = 5354041000.

The previous prime is 11778890681. The next prime is 11778890693. The reversal of 11778890684 is 48609887711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778890681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12167792 + ... + 12168759.

Almost surely, 2^11778890684 is an apocalyptic number.

It is an amenable number.

11778890684 is a deficient number, since it is larger than the sum of its proper divisors (10878439228).

11778890684 is a wasteful number, since it uses less digits than its factorization.

11778890684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24336577 (or 24336564 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 59.

The spelling of 11778890684 in words is "eleven billion, seven hundred seventy-eight million, eight hundred ninety thousand, six hundred eighty-four".