12387469312 has 24 divisors (see below), whose sum is σ = 24768894150. Its totient is φ = 6193733632.

The previous prime is 12387469309. The next prime is 12387469333. The reversal of 12387469312 is 21396478321.

It can be written as a sum of positive squares in only one way, i.e., 11063673856 + 1323795456 = 105184^2 + 36384^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3022237 + ... + 3026332.

Almost surely, 2^12387469312 is an apocalyptic number.

It is an amenable number.

12387469312 is a deficient number, since it is larger than the sum of its proper divisors (12381424838).

12387469312 is an frugal number, since it uses more digits than its factorization.

12387469312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6048591 (or 6048571 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

Subtracting 12387469312 from its reverse (21396478321), we obtain a palindrome (9009009009).

The spelling of 12387469312 in words is "twelve billion, three hundred eighty-seven million, four hundred sixty-nine thousand, three hundred twelve".