27213020243 has 2 divisors, whose sum is σ = 27213020244. Its totient is φ = 27213020242.

The previous prime is 27213020231. The next prime is 27213020251. The reversal of 27213020243 is 34202031272.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27213020243 - 2¹² = 27213016147 is a prime.

It is not a weakly prime, because it can be changed into another prime (27213020293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13606510121 + 13606510122.

It is an arithmetic number, because the mean of its divisors is an integer number (13606510122).

Almost surely, 2^27213020243 is an apocalyptic number.

27213020243 is a deficient number, since it is larger than the sum of its proper divisors (1).

27213020243 is an equidigital number, since it uses as much as digits as its factorization.

27213020243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 26.

The spelling of 27213020243 in words is "twenty-seven billion, two hundred thirteen million, twenty thousand, two hundred forty-three".