27254640773 has 2 divisors, whose sum is σ = 27254640774. Its totient is φ = 27254640772.

The previous prime is 27254640769. The next prime is 27254640793. The reversal of 27254640773 is 37704645272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21799636609 + 5455004164 = 147647^2 + 73858^2 .

It is a cyclic number.

It is not a de Polignac number, because 27254640773 - 2² = 27254640769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27254640793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13627320386 + 13627320387.

It is an arithmetic number, because the mean of its divisors is an integer number (13627320387).

Almost surely, 2^27254640773 is an apocalyptic number.

It is an amenable number.

27254640773 is a deficient number, since it is larger than the sum of its proper divisors (1).

27254640773 is an equidigital number, since it uses as much as digits as its factorization.

27254640773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 47.

The spelling of 27254640773 in words is "twenty-seven billion, two hundred fifty-four million, six hundred forty thousand, seven hundred seventy-three".