27505499543 has 2 divisors, whose sum is σ = 27505499544. Its totient is φ = 27505499542.

The previous prime is 27505499531. The next prime is 27505499551. The reversal of 27505499543 is 34599450572.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27505499543 - 2⁶ = 27505499479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27505799543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13752749771 + 13752749772.

It is an arithmetic number, because the mean of its divisors is an integer number (13752749772).

Almost surely, 2^27505499543 is an apocalyptic number.

27505499543 is a deficient number, since it is larger than the sum of its proper divisors (1).

27505499543 is an equidigital number, since it uses as much as digits as its factorization.

27505499543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804000, while the sum is 53.

The spelling of 27505499543 in words is "twenty-seven billion, five hundred five million, four hundred ninety-nine thousand, five hundred forty-three".