13209171284 has 6 divisors (see below), whose sum is σ = 23116049754. Its totient is φ = 6604585640.

The previous prime is 13209171277. The next prime is 13209171289. The reversal of 13209171284 is 48217190231.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7853858884 + 5355312400 = 88622^2 + 73180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13209171289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1651146407 + ... + 1651146414.

It is an arithmetic number, because the mean of its divisors is an integer number (3852674959).

Almost surely, 2^13209171284 is an apocalyptic number.

It is an amenable number.

13209171284 is a deficient number, since it is larger than the sum of its proper divisors (9906878470).

13209171284 is a wasteful number, since it uses less digits than its factorization.

13209171284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302292825 (or 3302292823 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 13209171284 in words is "thirteen billion, two hundred nine million, one hundred seventy-one thousand, two hundred eighty-four".