81341125027 has 2 divisors, whose sum is σ = 81341125028. Its totient is φ = 81341125026.

The previous prime is 81341125013. The next prime is 81341125057. The reversal of 81341125027 is 72052114318.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81341125027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81341124983 and 81341125001.

It is not a weakly prime, because it can be changed into another prime (81341125057) 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, 40670562513 + 40670562514.

It is an arithmetic number, because the mean of its divisors is an integer number (40670562514).

Almost surely, 2^81341125027 is an apocalyptic number.

81341125027 is a deficient number, since it is larger than the sum of its proper divisors (1).

81341125027 is an equidigital number, since it uses as much as digits as its factorization.

81341125027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The spelling of 81341125027 in words is "eighty-one billion, three hundred forty-one million, one hundred twenty-five thousand, twenty-seven".