12744391451 has 4 divisors (see below), whose sum is σ = 13902972504. Its totient is φ = 11585810400.

The previous prime is 12744391433. The next prime is 12744391477. The reversal of 12744391451 is 15419344721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12744391451 - 2¹⁰ = 12744390427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12744391399 and 12744391408.

It is not an unprimeable number, because it can be changed into a prime (12744391421) 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, 579290510 + ... + 579290531.

It is an arithmetic number, because the mean of its divisors is an integer number (3475743126).

Almost surely, 2^12744391451 is an apocalyptic number.

12744391451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12744391451 is a deficient number, since it is larger than the sum of its proper divisors (1158581053).

12744391451 is a wasteful number, since it uses less digits than its factorization.

12744391451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158581052.

The product of its digits is 120960, while the sum is 41.

The spelling of 12744391451 in words is "twelve billion, seven hundred forty-four million, three hundred ninety-one thousand, four hundred fifty-one".