272791286561 has 4 divisors (see below), whose sum is σ = 273289991472. Its totient is φ = 272292581652.

The previous prime is 272791286497. The next prime is 272791286567. The reversal of 272791286561 is 165682197272.

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 a cyclic number.

It is not a de Polignac number, because 272791286561 - 2⁶ = 272791286497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 272791286497 and 272791286506.

It is not an unprimeable number, because it can be changed into a prime (272791286567) 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, 249351635 + ... + 249352728.

It is an arithmetic number, because the mean of its divisors is an integer number (68322497868).

Almost surely, 2^272791286561 is an apocalyptic number.

It is an amenable number.

272791286561 is a deficient number, since it is larger than the sum of its proper divisors (498704911).

272791286561 is an equidigital number, since it uses as much as digits as its factorization.

272791286561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498704910.

The product of its digits is 5080320, while the sum is 56.

The spelling of 272791286561 in words is "two hundred seventy-two billion, seven hundred ninety-one million, two hundred eighty-six thousand, five hundred sixty-one".