11687789784 has 96 divisors (see below), whose sum is σ = 32402406960. Its totient is φ = 3510312960.

The previous prime is 11687789753. The next prime is 11687789801. The reversal of 11687789784 is 48798778611.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 310344 + ... + 345960.

Almost surely, 2^11687789784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11687789784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16201203480).

11687789784 is an abundant number, since it is smaller than the sum of its proper divisors (20714617176).

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

11687789784 is a wasteful number, since it uses less digits than its factorization.

11687789784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35761 (or 35746 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 66.

The spelling of 11687789784 in words is "eleven billion, six hundred eighty-seven million, seven hundred eighty-nine thousand, seven hundred eighty-four".