272871561217 has 4 divisors (see below), whose sum is σ = 272882105280. Its totient is φ = 272861017156.

The previous prime is 272871561199. The next prime is 272871561233. The reversal of 272871561217 is 712165178272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272871561217 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272871561247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5233117 + ... + 5285002.

It is an arithmetic number, because the mean of its divisors is an integer number (68220526320).

Almost surely, 2^272871561217 is an apocalyptic number.

It is an amenable number.

272871561217 is a deficient number, since it is larger than the sum of its proper divisors (10544063).

272871561217 is a wasteful number, since it uses less digits than its factorization.

272871561217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10544062.

The product of its digits is 658560, while the sum is 49.

The spelling of 272871561217 in words is "two hundred seventy-two billion, eight hundred seventy-one million, five hundred sixty-one thousand, two hundred seventeen".