272753633921 has 4 divisors (see below), whose sum is σ = 272775230292. Its totient is φ = 272732037552.

The previous prime is 272753633863. The next prime is 272753633983. The reversal of 272753633921 is 129336357272.

It is a happy number.

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 29837725696 + 242915908225 = 172736^2 + 492865^2 .

It is a cyclic number.

It is not a de Polignac number, because 272753633921 - 2⁶ = 272753633857 is a prime.

It is a super-2 number, since 2×272753633921² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 272753633921.

It is not an unprimeable number, because it can be changed into a prime (272753633221) 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, 10779230 + ... + 10804503.

It is an arithmetic number, because the mean of its divisors is an integer number (68193807573).

Almost surely, 2^272753633921 is an apocalyptic number.

It is an amenable number.

272753633921 is a deficient number, since it is larger than the sum of its proper divisors (21596371).

272753633921 is a wasteful number, since it uses less digits than its factorization.

272753633921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21596370.

The product of its digits is 2857680, while the sum is 50.

The spelling of 272753633921 in words is "two hundred seventy-two billion, seven hundred fifty-three million, six hundred thirty-three thousand, nine hundred twenty-one".