13211505873 has 6 divisors (see below), whose sum is σ = 19083286274. Its totient is φ = 8807670576.

The previous prime is 13211505863. The next prime is 13211505887. The reversal of 13211505873 is 37850511231.

It is a happy number.

13211505873 is a `hidden beast` number, since 1 + 3 + 21 + 1 + 50 + 587 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12761769024 + 449736849 = 112968^2 + 21207^2 .

It is not a de Polignac number, because 13211505873 - 2¹⁶ = 13211440337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13211505833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 733972540 + ... + 733972557.

Almost surely, 2^13211505873 is an apocalyptic number.

It is an amenable number.

13211505873 is a deficient number, since it is larger than the sum of its proper divisors (5871780401).

13211505873 is a wasteful number, since it uses less digits than its factorization.

13211505873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467945103 (or 1467945100 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 13211505873 in words is "thirteen billion, two hundred eleven million, five hundred five thousand, eight hundred seventy-three".