27489966242 has 6 divisors (see below), whose sum is σ = 41235301083. Its totient is φ = 13744865882.

The previous prime is 27489966239. The next prime is 27489966269. The reversal of 27489966242 is 24266998472.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13744983121 + 13744983121 = 117239^2 + 117239^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=117239.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 175859 + ... + 293097.

Almost surely, 2^27489966242 is an apocalyptic number.

27489966242 is a deficient number, since it is larger than the sum of its proper divisors (13745334841).

27489966242 is an frugal number, since it uses more digits than its factorization.

27489966242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234480 (or 117241 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 59.

The spelling of 27489966242 in words is "twenty-seven billion, four hundred eighty-nine million, nine hundred sixty-six thousand, two hundred forty-two".