13172841529 has 3 divisors (see below), whose sum is σ = 13172956303. Its totient is φ = 13172726756.

The previous prime is 13172841523. The next prime is 13172841533. The reversal of 13172841529 is 92514827131.

The square root of 13172841529 is 114773.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92514827131 = 1031 ⋅89733101.

It can be written as a sum of positive squares in only one way, i.e., 12931101225 + 241740304 = 113715^2 + 15548^2 .

It is not a de Polignac number, because 13172841529 - 2⁷ = 13172841401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13172841523) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 57387 + ... + 172159.

Almost surely, 2^13172841529 is an apocalyptic number.

13172841529 is the 114773-rd square number.

13172841529 is the 57387-th centered octagonal number.

It is an amenable number.

13172841529 is a deficient number, since it is larger than the sum of its proper divisors (114774).

13172841529 is an frugal number, since it uses more digits than its factorization.

13172841529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229546 (or 114773 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The spelling of 13172841529 in words is "thirteen billion, one hundred seventy-two million, eight hundred forty-one thousand, five hundred twenty-nine".