27135249853 has 2 divisors, whose sum is σ = 27135249854. Its totient is φ = 27135249852.

The previous prime is 27135249793. The next prime is 27135249863. The reversal of 27135249853 is 35894253172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20995430404 + 6139819449 = 144898^2 + 78357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27135249853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27135249797 and 27135249806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27135249863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13567624926 + 13567624927.

It is an arithmetic number, because the mean of its divisors is an integer number (13567624927).

Almost surely, 2^27135249853 is an apocalyptic number.

It is an amenable number.

27135249853 is a deficient number, since it is larger than the sum of its proper divisors (1).

27135249853 is an equidigital number, since it uses as much as digits as its factorization.

27135249853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 49.

The spelling of 27135249853 in words is "twenty-seven billion, one hundred thirty-five million, two hundred forty-nine thousand, eight hundred fifty-three".