272017384821 has 24 divisors (see below), whose sum is σ = 483586463360. Its totient is φ = 143481697056.

The previous prime is 272017384781. The next prime is 272017384841. The reversal of 272017384821 is 128483710272.

It is not a de Polignac number, because 272017384821 - 2¹⁰ = 272017383797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272017384841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166065961 + ... + 166067598.

Almost surely, 2^272017384821 is an apocalyptic number.

272017384821 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

272017384821 is a deficient number, since it is larger than the sum of its proper divisors (211569078539).

272017384821 is a wasteful number, since it uses less digits than its factorization.

272017384821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332133585 (or 332133582 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 272017384821 in words is "two hundred seventy-two billion, seventeen million, three hundred eighty-four thousand, eight hundred twenty-one".