27273767457 has 4 divisors (see below), whose sum is σ = 36365023280. Its totient is φ = 18182511636.

The previous prime is 27273767453. The next prime is 27273767467. The reversal of 27273767457 is 75476737272.

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 27273767457 - 2² = 27273767453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27273767397 and 27273767406.

It is not an unprimeable number, because it can be changed into a prime (27273767453) 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, 4545627907 + ... + 4545627912.

It is an arithmetic number, because the mean of its divisors is an integer number (9091255820).

Almost surely, 2^27273767457 is an apocalyptic number.

It is an amenable number.

27273767457 is a deficient number, since it is larger than the sum of its proper divisors (9091255823).

27273767457 is an equidigital number, since it uses as much as digits as its factorization.

27273767457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9091255822.

The product of its digits is 24202080, while the sum is 57.

The spelling of 27273767457 in words is "twenty-seven billion, two hundred seventy-three million, seven hundred sixty-seven thousand, four hundred fifty-seven".