12287644742 has 4 divisors (see below), whose sum is σ = 18431467116. Its totient is φ = 6143822370.

The previous prime is 12287644711. The next prime is 12287644757. The reversal of 12287644742 is 24744678221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24744678221 = 467 ⋅52986463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3071911184 + ... + 3071911187.

It is an arithmetic number, because the mean of its divisors is an integer number (4607866779).

Almost surely, 2^12287644742 is an apocalyptic number.

12287644742 is a deficient number, since it is larger than the sum of its proper divisors (6143822374).

12287644742 is an equidigital number, since it uses as much as digits as its factorization.

12287644742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143822373.

The product of its digits is 1204224, while the sum is 47.

The spelling of 12287644742 in words is "twelve billion, two hundred eighty-seven million, six hundred forty-four thousand, seven hundred forty-two".