13278910326 has 64 divisors (see below), whose sum is σ = 30328307712. Its totient is φ = 3839220000.

The previous prime is 13278910289. The next prime is 13278910349. The reversal of 13278910326 is 62301987231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99561 + ... + 190971.

It is an arithmetic number, because the mean of its divisors is an integer number (473879808).

Almost surely, 2^13278910326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13278910326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15164153856).

13278910326 is an abundant number, since it is smaller than the sum of its proper divisors (17049397386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13278910326 is a wasteful number, since it uses less digits than its factorization.

13278910326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91529.

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 13278910326 in words is "thirteen billion, two hundred seventy-eight million, nine hundred ten thousand, three hundred twenty-six".