12340512387 has 48 divisors (see below), whose sum is σ = 20902295232. Its totient is φ = 6868592640.

The previous prime is 12340512329. The next prime is 12340512389. The reversal of 12340512387 is 78321504321.

12340512387 is a `hidden beast` number, since 1 + 23 + 40 + 512 + 3 + 87 = 666.

It is not a de Polignac number, because 12340512387 - 2⁶ = 12340512323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12340512389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1745163 + ... + 1752219.

It is an arithmetic number, because the mean of its divisors is an integer number (435464484).

Almost surely, 2^12340512387 is an apocalyptic number.

12340512387 is a deficient number, since it is larger than the sum of its proper divisors (8561782845).

12340512387 is a wasteful number, since it uses less digits than its factorization.

12340512387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788 (or 7785 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 12340512387 in words is "twelve billion, three hundred forty million, five hundred twelve thousand, three hundred eighty-seven".