13378423806 has 72 divisors (see below), whose sum is σ = 33041480472. Its totient is φ = 4054050000.

The previous prime is 13378423763. The next prime is 13378423831. The reversal of 13378423806 is 60832487331.

13378423806 is a `hidden beast` number, since 1 + 337 + 84 + 238 + 0 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54945 + ... + 172556.

It is an arithmetic number, because the mean of its divisors is an integer number (458909451).

Almost surely, 2^13378423806 is an apocalyptic number.

13378423806 is an abundant number, since it is smaller than the sum of its proper divisors (19663056666).

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

13378423806 is a wasteful number, since it uses less digits than its factorization.

13378423806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227540 (or 227517 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 13378423806 in words is "thirteen billion, three hundred seventy-eight million, four hundred twenty-three thousand, eight hundred six".