12840909326 has 24 divisors (see below), whose sum is σ = 22414032936. Its totient is φ = 5501292720.

The previous prime is 12840909307. The next prime is 12840909343. The reversal of 12840909326 is 62390904821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273320 + ... + 316836.

It is an arithmetic number, because the mean of its divisors is an integer number (933918039).

Almost surely, 2^12840909326 is an apocalyptic number.

12840909326 is a deficient number, since it is larger than the sum of its proper divisors (9573123610).

12840909326 is a wasteful number, since it uses less digits than its factorization.

12840909326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46544 (or 46537 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 12840909326 in words is "twelve billion, eight hundred forty million, nine hundred nine thousand, three hundred twenty-six".