272913252921 has 9 divisors (see below), whose sum is σ = 394210295791. Its totient is φ = 181941123792.

The previous prime is 272913252853. The next prime is 272913252967. The reversal of 272913252921 is 129252319272.

The square root of 272913252921 is 522411.

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

272913252921 is a `hidden beast` number, since 2 + 7 + 2 + 91 + 32 + 529 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106174964025 + 166738288896 = 325845^2 + 408336^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 272913252921 - 2¹⁹ = 272912728633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272913252721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1480165 + ... + 1654301.

Almost surely, 2^272913252921 is an apocalyptic number.

272913252921 is the 522411-st square number.

272913252921 is the 261206-th centered octagonal number.

It is an amenable number.

272913252921 is a deficient number, since it is larger than the sum of its proper divisors (121297042870).

272913252921 is an frugal number, since it uses more digits than its factorization.

272913252921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348280 (or 174140 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 272913252921 in words is "two hundred seventy-two billion, nine hundred thirteen million, two hundred fifty-two thousand, nine hundred twenty-one".