12651443312 has 20 divisors (see below), whose sum is σ = 24520019160. Its totient is φ = 6323696448.

The previous prime is 12651443297. The next prime is 12651443323. The reversal of 12651443312 is 21334415621.

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, 74387 + ... + 175602.

It is an arithmetic number, because the mean of its divisors is an integer number (1226000958).

Almost surely, 2^12651443312 is an apocalyptic number.

It is an amenable number.

12651443312 is a deficient number, since it is larger than the sum of its proper divisors (11868575848).

12651443312 is a wasteful number, since it uses less digits than its factorization.

12651443312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253160 (or 253154 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

Adding to 12651443312 its reverse (21334415621), we get a palindrome (33985858933).

The spelling of 12651443312 in words is "twelve billion, six hundred fifty-one million, four hundred forty-three thousand, three hundred twelve".