12644731414 has 64 divisors (see below), whose sum is σ = 22409809920. Its totient is φ = 5239503360.

The previous prime is 12644731373. The next prime is 12644731417. The reversal of 12644731414 is 41413744621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12644731417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20038879 + ... + 20039509.

It is an arithmetic number, because the mean of its divisors is an integer number (350153280).

Almost surely, 2^12644731414 is an apocalyptic number.

12644731414 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12644731414 is a deficient number, since it is larger than the sum of its proper divisors (9765078506).

12644731414 is a wasteful number, since it uses less digits than its factorization.

12644731414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its digits is 64512, while the sum is 37.

The spelling of 12644731414 in words is "twelve billion, six hundred forty-four million, seven hundred thirty-one thousand, four hundred fourteen".