12644238614 has 48 divisors (see below), whose sum is σ = 23441358528. Its totient is φ = 5082594048.

The previous prime is 12644238589. The next prime is 12644238637. The reversal of 12644238614 is 41683244621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475187 + ... + 501089.

It is an arithmetic number, because the mean of its divisors is an integer number (488361636).

Almost surely, 2^12644238614 is an apocalyptic number.

12644238614 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12644238614 is a deficient number, since it is larger than the sum of its proper divisors (10797119914).

12644238614 is a wasteful number, since it uses less digits than its factorization.

12644238614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26229 (or 26222 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The spelling of 12644238614 in words is "twelve billion, six hundred forty-four million, two hundred thirty-eight thousand, six hundred fourteen".