2143478472808 has 16 divisors (see below), whose sum is σ = 4019146146180. Its totient is φ = 1071706167168.

The previous prime is 2143478472781. The next prime is 2143478472857. The reversal of 2143478472808 is 8082748743412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1336747567684 + 806730905124 = 1156178^2 + 898182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3857091 + ... + 4377682.

Almost surely, 2^{2143478472808} is an apocalyptic number.

It is an amenable number.

2143478472808 is a deficient number, since it is larger than the sum of its proper divisors (1875667673372).

2143478472808 is a wasteful number, since it uses less digits than its factorization.

2143478472808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267316 (or 8267312 counting only the distinct ones).

The product of its (nonzero) digits is 19267584, while the sum is 58.

The spelling of 2143478472808 in words is "two trillion, one hundred forty-three billion, four hundred seventy-eight million, four hundred seventy-two thousand, eight hundred eight".