13281256172 has 6 divisors (see below), whose sum is σ = 23242198308. Its totient is φ = 6640628084.

The previous prime is 13281256169. The next prime is 13281256211. The reversal of 13281256172 is 27165218231.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660157018 + ... + 1660157025.

It is an arithmetic number, because the mean of its divisors is an integer number (3873699718).

Almost surely, 2^13281256172 is an apocalyptic number.

It is an amenable number.

13281256172 is a deficient number, since it is larger than the sum of its proper divisors (9960942136).

13281256172 is a wasteful number, since it uses less digits than its factorization.

13281256172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320314047 (or 3320314045 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The spelling of 13281256172 in words is "thirteen billion, two hundred eighty-one million, two hundred fifty-six thousand, one hundred seventy-two".