12334647638 has 4 divisors (see below), whose sum is σ = 18501971460. Its totient is φ = 6167323818.

The previous prime is 12334647613. The next prime is 12334647649. The reversal of 12334647638 is 83674643321.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12334647592 and 12334647601.

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, 3083661908 + ... + 3083661911.

It is an arithmetic number, because the mean of its divisors is an integer number (4625492865).

Almost surely, 2^12334647638 is an apocalyptic number.

12334647638 is a deficient number, since it is larger than the sum of its proper divisors (6167323822).

12334647638 is an equidigital number, since it uses as much as digits as its factorization.

12334647638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167323821.

The product of its digits is 1741824, while the sum is 47.

The spelling of 12334647638 in words is "twelve billion, three hundred thirty-four million, six hundred forty-seven thousand, six hundred thirty-eight".