13478783906 has 16 divisors (see below), whose sum is σ = 23335266240. Its totient is φ = 5719426800.

The previous prime is 13478783887. The next prime is 13478783933. The reversal of 13478783906 is 60938787431.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4764776 + ... + 4767603.

It is an arithmetic number, because the mean of its divisors is an integer number (1458454140).

Almost surely, 2^13478783906 is an apocalyptic number.

13478783906 is a deficient number, since it is larger than the sum of its proper divisors (9856482334).

13478783906 is a wasteful number, since it uses less digits than its factorization.

13478783906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532489.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 13478783906 in words is "thirteen billion, four hundred seventy-eight million, seven hundred eighty-three thousand, nine hundred six".