27789898273 has 2 divisors, whose sum is σ = 27789898274. Its totient is φ = 27789898272.

The previous prime is 27789898271. The next prime is 27789898289. The reversal of 27789898273 is 37289898772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19831117329 + 7958780944 = 140823^2 + 89212^2 .

It is a cyclic number.

It is not a de Polignac number, because 27789898273 - 2¹ = 27789898271 is a prime.

Together with 27789898271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27789898271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13894949136 + 13894949137.

It is an arithmetic number, because the mean of its divisors is an integer number (13894949137).

Almost surely, 2^27789898273 is an apocalyptic number.

It is an amenable number.

27789898273 is a deficient number, since it is larger than the sum of its proper divisors (1).

27789898273 is an equidigital number, since it uses as much as digits as its factorization.

27789898273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170698752, while the sum is 70.

The spelling of 27789898273 in words is "twenty-seven billion, seven hundred eighty-nine million, eight hundred ninety-eight thousand, two hundred seventy-three".