13171289994 has 12 divisors (see below), whose sum is σ = 28537795026. Its totient is φ = 4390429992.

The previous prime is 13171289993. The next prime is 13171290043. The reversal of 13171289994 is 49998217131.

It can be written as a sum of positive squares in only one way, i.e., 8418980025 + 4752309969 = 91755^2 + 68937^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13171289994.

It is not an unprimeable number, because it can be changed into a prime (13171289993) 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, 365869149 + ... + 365869184.

Almost surely, 2^13171289994 is an apocalyptic number.

13171289994 is an abundant number, since it is smaller than the sum of its proper divisors (15366505032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13171289994 is a wasteful number, since it uses less digits than its factorization.

13171289994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731738341 (or 731738338 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The spelling of 13171289994 in words is "thirteen billion, one hundred seventy-one million, two hundred eighty-nine thousand, nine hundred ninety-four".