272275731921 has 4 divisors (see below), whose sum is σ = 363034309232. Its totient is φ = 181517154612.

The previous prime is 272275731919. The next prime is 272275731941. The reversal of 272275731921 is 129137572272.

It is a happy number.

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 not a de Polignac number, because 272275731921 - 2¹ = 272275731919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272275731941) 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, 45379288651 + ... + 45379288656.

It is an arithmetic number, because the mean of its divisors is an integer number (90758577308).

Almost surely, 2^272275731921 is an apocalyptic number.

It is an amenable number.

272275731921 is a deficient number, since it is larger than the sum of its proper divisors (90758577311).

272275731921 is an equidigital number, since it uses as much as digits as its factorization.

272275731921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90758577310.

The product of its digits is 740880, while the sum is 48.

The spelling of 272275731921 in words is "two hundred seventy-two billion, two hundred seventy-five million, seven hundred thirty-one thousand, nine hundred twenty-one".