12409378384 has 20 divisors (see below), whose sum is σ = 25892645716. Its totient is φ = 5727405312.

The previous prime is 12409378379. The next prime is 12409378391. The reversal of 12409378384 is 48387390421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4506168384 + 7903210000 = 67128^2 + 88900^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29830029 + ... + 29830444.

Almost surely, 2^12409378384 is an apocalyptic number.

It is an amenable number.

12409378384 is an abundant number, since it is smaller than the sum of its proper divisors (13483267332).

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

12409378384 is a wasteful number, since it uses less digits than its factorization.

12409378384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59660494 (or 59660488 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 12409378384 in words is "twelve billion, four hundred nine million, three hundred seventy-eight thousand, three hundred eighty-four".