27589727668 has 6 divisors (see below), whose sum is σ = 48282023426. Its totient is φ = 13794863832.

The previous prime is 27589727629. The next prime is 27589727681. The reversal of 27589727668 is 86672798572.

It can be written as a sum of positive squares in only one way, i.e., 27049723024 + 540004644 = 164468^2 + 23238^2 .

It is a super-2 number, since 2×27589727668² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3448715955 + ... + 3448715962.

Almost surely, 2^27589727668 is an apocalyptic number.

It is an amenable number.

27589727668 is a deficient number, since it is larger than the sum of its proper divisors (20692295758).

27589727668 is a wasteful number, since it uses less digits than its factorization.

27589727668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897431921 (or 6897431919 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 67.

The spelling of 27589727668 in words is "twenty-seven billion, five hundred eighty-nine million, seven hundred twenty-seven thousand, six hundred sixty-eight".