27733564189 has 2 divisors, whose sum is σ = 27733564190. Its totient is φ = 27733564188.

The previous prime is 27733564181. The next prime is 27733564211. The reversal of 27733564189 is 98146533772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24442820964 + 3290743225 = 156342^2 + 57365^2 .

It is a cyclic number.

It is not a de Polignac number, because 27733564189 - 2³ = 27733564181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27733564181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13866782094 + 13866782095.

It is an arithmetic number, because the mean of its divisors is an integer number (13866782095).

Almost surely, 2^27733564189 is an apocalyptic number.

It is an amenable number.

27733564189 is a deficient number, since it is larger than the sum of its proper divisors (1).

27733564189 is an equidigital number, since it uses as much as digits as its factorization.

27733564189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 55.

The spelling of 27733564189 in words is "twenty-seven billion, seven hundred thirty-three million, five hundred sixty-four thousand, one hundred eighty-nine".