13204981971 has 24 divisors (see below), whose sum is σ = 19648334160. Its totient is φ = 8540582400.

The previous prime is 13204981963. The next prime is 13204981981. The reversal of 13204981971 is 17918940231.

It is not a de Polignac number, because 13204981971 - 2³ = 13204981963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13204981981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33910 + ... + 166011.

It is an arithmetic number, because the mean of its divisors is an integer number (818680590).

Almost surely, 2^13204981971 is an apocalyptic number.

13204981971 is a deficient number, since it is larger than the sum of its proper divisors (6443352189).

13204981971 is a wasteful number, since it uses less digits than its factorization.

13204981971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200147 (or 200144 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 13204981971 in words is "thirteen billion, two hundred four million, nine hundred eighty-one thousand, nine hundred seventy-one".