27771089589 has 6 divisors (see below), whose sum is σ = 40113796086. Its totient is φ = 18514059720.

The previous prime is 27771089579. The next prime is 27771089611. The reversal of 27771089589 is 98598017772.

It can be written as a sum of positive squares in only one way, i.e., 18664204689 + 9106884900 = 136617^2 + 95430^2 .

It is not a de Polignac number, because 27771089589 - 2⁴ = 27771089573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27771089539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1542838302 + ... + 1542838319.

It is an arithmetic number, because the mean of its divisors is an integer number (6685632681).

Almost surely, 2^27771089589 is an apocalyptic number.

It is an amenable number.

27771089589 is a deficient number, since it is larger than the sum of its proper divisors (12342706497).

27771089589 is a wasteful number, since it uses less digits than its factorization.

27771089589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085676627 (or 3085676624 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 63.

The spelling of 27771089589 in words is "twenty-seven billion, seven hundred seventy-one million, eighty-nine thousand, five hundred eighty-nine".