27109807139 has 2 divisors, whose sum is σ = 27109807140. Its totient is φ = 27109807138.

The previous prime is 27109807121. The next prime is 27109807199. The reversal of 27109807139 is 93170890172.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27109807139 is a prime.

It is a super-2 number, since 2×27109807139² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27109807093 and 27109807102.

It is not a weakly prime, because it can be changed into another prime (27109807199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13554903569 + 13554903570.

It is an arithmetic number, because the mean of its divisors is an integer number (13554903570).

Almost surely, 2^27109807139 is an apocalyptic number.

27109807139 is a deficient number, since it is larger than the sum of its proper divisors (1).

27109807139 is an equidigital number, since it uses as much as digits as its factorization.

27109807139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The spelling of 27109807139 in words is "twenty-seven billion, one hundred nine million, eight hundred seven thousand, one hundred thirty-nine".