27149034881 has 2 divisors, whose sum is σ = 27149034882. Its totient is φ = 27149034880.

The previous prime is 27149034859. The next prime is 27149034917. The reversal of 27149034881 is 18843094172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21020650225 + 6128384656 = 144985^2 + 78284^2 .

It is a cyclic number.

It is not a de Polignac number, because 27149034881 - 2³⁴ = 9969165697 is a prime.

It is a super-2 number, since 2×27149034881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27149034481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13574517440 + 13574517441.

It is an arithmetic number, because the mean of its divisors is an integer number (13574517441).

Almost surely, 2^27149034881 is an apocalyptic number.

It is an amenable number.

27149034881 is a deficient number, since it is larger than the sum of its proper divisors (1).

27149034881 is an equidigital number, since it uses as much as digits as its factorization.

27149034881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 27149034881 in words is "twenty-seven billion, one hundred forty-nine million, thirty-four thousand, eight hundred eighty-one".