27125331913 has 2 divisors, whose sum is σ = 27125331914. Its totient is φ = 27125331912.

The previous prime is 27125331823. The next prime is 27125331941. The reversal of 27125331913 is 31913352172.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18023599504 + 9101732409 = 134252^2 + 95403^2 .

It is a cyclic number.

It is not a de Polignac number, because 27125331913 - 2²⁵ = 27091777481 is a prime.

It is not a weakly prime, because it can be changed into another prime (27125337913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13562665956 + 13562665957.

It is an arithmetic number, because the mean of its divisors is an integer number (13562665957).

Almost surely, 2^27125331913 is an apocalyptic number.

It is an amenable number.

27125331913 is a deficient number, since it is larger than the sum of its proper divisors (1).

27125331913 is an equidigital number, since it uses as much as digits as its factorization.

27125331913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The spelling of 27125331913 in words is "twenty-seven billion, one hundred twenty-five million, three hundred thirty-one thousand, nine hundred thirteen".