27655637740433 has 2 divisors, whose sum is σ = 27655637740434. Its totient is φ = 27655637740432.

The previous prime is 27655637740369. The next prime is 27655637740441. The reversal of 27655637740433 is 33404773655672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27299548660609 + 356089079824 = 5224897^2 + 596732^2 .

It is a cyclic number.

It is not a de Polignac number, because 27655637740433 - 2⁶ = 27655637740369 is a prime.

It is not a weakly prime, because it can be changed into another prime (27655637740453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13827818870216 + 13827818870217.

It is an arithmetic number, because the mean of its divisors is an integer number (13827818870217).

Almost surely, 2^{27655637740433} is an apocalyptic number.

It is an amenable number.

27655637740433 is a deficient number, since it is larger than the sum of its proper divisors (1).

27655637740433 is an equidigital number, since it uses as much as digits as its factorization.

27655637740433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 266716800, while the sum is 62.

The spelling of 27655637740433 in words is "twenty-seven trillion, six hundred fifty-five billion, six hundred thirty-seven million, seven hundred forty thousand, four hundred thirty-three".