27020784397 has 2 divisors, whose sum is σ = 27020784398. Its totient is φ = 27020784396.

The previous prime is 27020784389. The next prime is 27020784403. The reversal of 27020784397 is 79348702072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26736828196 + 283956201 = 163514^2 + 16851^2 .

It is a cyclic number.

It is not a de Polignac number, because 27020784397 - 2³ = 27020784389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27020784397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27020784367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510392198 + 13510392199.

It is an arithmetic number, because the mean of its divisors is an integer number (13510392199).

Almost surely, 2^27020784397 is an apocalyptic number.

It is an amenable number.

27020784397 is a deficient number, since it is larger than the sum of its proper divisors (1).

27020784397 is an equidigital number, since it uses as much as digits as its factorization.

27020784397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 27020784397 in words is "twenty-seven billion, twenty million, seven hundred eighty-four thousand, three hundred ninety-seven".