272631216661 has 16 divisors (see below), whose sum is σ = 284716339200. Its totient is φ = 260890484400.

The previous prime is 272631216643. The next prime is 272631216667. The reversal of 272631216661 is 166612136272.

It is a cyclic number.

It is not a de Polignac number, because 272631216661 - 2³³ = 264041282069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272631216667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80985 + ... + 742846.

It is an arithmetic number, because the mean of its divisors is an integer number (17794771200).

Almost surely, 2^272631216661 is an apocalyptic number.

It is an amenable number.

272631216661 is a deficient number, since it is larger than the sum of its proper divisors (12085122539).

272631216661 is an equidigital number, since it uses as much as digits as its factorization.

272631216661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824040.

The product of its digits is 217728, while the sum is 43.

The spelling of 272631216661 in words is "two hundred seventy-two billion, six hundred thirty-one million, two hundred sixteen thousand, six hundred sixty-one".