13172259268577 has 4 divisors (see below), whose sum is σ = 13174550500500. Its totient is φ = 13169968036656.

The previous prime is 13172259268561. The next prime is 13172259268667. The reversal of 13172259268577 is 77586295227131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1402083337216 + 11770175931361 = 1184096^2 + 3430769^2 .

It is a cyclic number.

It is not a de Polignac number, because 13172259268577 - 2⁴ = 13172259268561 is a prime.

It is a super-2 number, since 2×13172259268577² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13172259268477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1145607338 + ... + 1145618835.

It is an arithmetic number, because the mean of its divisors is an integer number (3293637625125).

Almost surely, 2^{13172259268577} is an apocalyptic number.

It is an amenable number.

13172259268577 is a deficient number, since it is larger than the sum of its proper divisors (2291231923).

13172259268577 is an equidigital number, since it uses as much as digits as its factorization.

13172259268577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291231922.

The product of its digits is 88905600, while the sum is 65.

The spelling of 13172259268577 in words is "thirteen trillion, one hundred seventy-two billion, two hundred fifty-nine million, two hundred sixty-eight thousand, five hundred seventy-seven".