13478783905 has 8 divisors (see below), whose sum is σ = 16175673000. Its totient is φ = 10782272256.

The previous prime is 13478783887. The next prime is 13478783933. The reversal of 13478783905 is 50938787431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 779973184 + 12698810721 = 27928^2 + 112689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13478783905 - 2⁷ = 13478783777 is a prime.

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, 8730 + ... + 164419.

It is an arithmetic number, because the mean of its divisors is an integer number (2021959125).

Almost surely, 2^13478783905 is an apocalyptic number.

It is an amenable number.

13478783905 is a deficient number, since it is larger than the sum of its proper divisors (2696889095).

13478783905 is a wasteful number, since it uses less digits than its factorization.

13478783905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188723.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 13478783905 in words is "thirteen billion, four hundred seventy-eight million, seven hundred eighty-three thousand, nine hundred five".