12381787404 has 72 divisors (see below), whose sum is σ = 35826755328. Its totient is φ = 3532001760.

The previous prime is 12381787357. The next prime is 12381787459. The reversal of 12381787404 is 40478718321.

12381787404 is a `hidden beast` number, since 1 + 238 + 1 + 7 + 8 + 7 + 404 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12381787404.

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, 120079 + ... + 197945.

It is an arithmetic number, because the mean of its divisors is an integer number (497593824).

Almost surely, 2^12381787404 is an apocalyptic number.

12381787404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12381787404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17913377664).

12381787404 is an abundant number, since it is smaller than the sum of its proper divisors (23444967924).

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

12381787404 is a wasteful number, since it uses less digits than its factorization.

12381787404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78515 (or 78510 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 12381787404 in words is "twelve billion, three hundred eighty-one million, seven hundred eighty-seven thousand, four hundred four".