27054420557 has 2 divisors, whose sum is σ = 27054420558. Its totient is φ = 27054420556.

The previous prime is 27054420527. The next prime is 27054420581. The reversal of 27054420557 is 75502445072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26586606916 + 467813641 = 163054^2 + 21629^2 .

It is a cyclic number.

It is not a de Polignac number, because 27054420557 - 2⁶ = 27054420493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27054420527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13527210278 + 13527210279.

It is an arithmetic number, because the mean of its divisors is an integer number (13527210279).

Almost surely, 2^27054420557 is an apocalyptic number.

It is an amenable number.

27054420557 is a deficient number, since it is larger than the sum of its proper divisors (1).

27054420557 is an equidigital number, since it uses as much as digits as its factorization.

27054420557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392000, while the sum is 41.

The spelling of 27054420557 in words is "twenty-seven billion, fifty-four million, four hundred twenty thousand, five hundred fifty-seven".