12247146387 has 36 divisors (see below), whose sum is σ = 20590404120. Its totient is φ = 6994334592.

The previous prime is 12247146383. The next prime is 12247146391. The reversal of 12247146387 is 78364174221.

12247146387 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 7 + 1 + 4 + 638 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (12247146383) and next prime (12247146391).

It is not a de Polignac number, because 12247146387 - 2² = 12247146383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12247146383) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 865723 + ... + 879755.

It is an arithmetic number, because the mean of its divisors is an integer number (571955670).

Almost surely, 2^12247146387 is an apocalyptic number.

12247146387 is a deficient number, since it is larger than the sum of its proper divisors (8343257733).

12247146387 is a wasteful number, since it uses less digits than its factorization.

12247146387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16032 (or 16022 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The spelling of 12247146387 in words is "twelve billion, two hundred forty-seven million, one hundred forty-six thousand, three hundred eighty-seven".