12723361347128 has 16 divisors (see below), whose sum is σ = 23931559005480. Its totient is φ = 6341612279008.

The previous prime is 12723361347121. The next prime is 12723361347131. The reversal of 12723361347128 is 82174316332721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723361347121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2508546626 + ... + 2508551697.

Almost surely, 2^{12723361347128} is an apocalyptic number.

It is an amenable number.

12723361347128 is a deficient number, since it is larger than the sum of its proper divisors (11208197658352).

12723361347128 is a wasteful number, since it uses less digits than its factorization.

12723361347128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5017098646 (or 5017098642 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

Adding to 12723361347128 its reverse (82174316332721), we get a palindrome (94897677679849).

The spelling of 12723361347128 in words is "twelve trillion, seven hundred twenty-three billion, three hundred sixty-one million, three hundred forty-seven thousand, one hundred twenty-eight".