27154627889 has 2 divisors, whose sum is σ = 27154627890. Its totient is φ = 27154627888.

The previous prime is 27154627873. The next prime is 27154627921. The reversal of 27154627889 is 98872645172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20112061489 + 7042566400 = 141817^2 + 83920^2 .

It is a cyclic number.

It is not a de Polignac number, because 27154627889 - 2⁴ = 27154627873 is a prime.

It is not a weakly prime, because it can be changed into another prime (27154627589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13577313944 + 13577313945.

It is an arithmetic number, because the mean of its divisors is an integer number (13577313945).

Almost surely, 2^27154627889 is an apocalyptic number.

It is an amenable number.

27154627889 is a deficient number, since it is larger than the sum of its proper divisors (1).

27154627889 is an equidigital number, since it uses as much as digits as its factorization.

27154627889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13547520, while the sum is 59.

The spelling of 27154627889 in words is "twenty-seven billion, one hundred fifty-four million, six hundred twenty-seven thousand, eight hundred eighty-nine".