12371680385 has 16 divisors (see below), whose sum is σ = 15874959312. Its totient is φ = 9222912000.

The previous prime is 12371680339. The next prime is 12371680393. The reversal of 12371680385 is 58308617321.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2866210369 + 9505470016 = 53537^2 + 97496^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12371680385 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711956 + ... + 729125.

It is an arithmetic number, because the mean of its divisors is an integer number (992184957).

Almost surely, 2^12371680385 is an apocalyptic number.

It is an amenable number.

12371680385 is a deficient number, since it is larger than the sum of its proper divisors (3503278927).

12371680385 is a wasteful number, since it uses less digits than its factorization.

12371680385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441204.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 12371680385 in words is "twelve billion, three hundred seventy-one million, six hundred eighty thousand, three hundred eighty-five".