27325296781 has 2 divisors, whose sum is σ = 27325296782. Its totient is φ = 27325296780.

The previous prime is 27325296767. The next prime is 27325296829. The reversal of 27325296781 is 18769252372.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24677268100 + 2648028681 = 157090^2 + 51459^2 .

It is a cyclic number.

It is not a de Polignac number, because 27325296781 - 2²⁵ = 27291742349 is a prime.

It is a super-2 number, since 2×27325296781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27325296701) 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, 13662648390 + 13662648391.

It is an arithmetic number, because the mean of its divisors is an integer number (13662648391).

Almost surely, 2^27325296781 is an apocalyptic number.

It is an amenable number.

27325296781 is a deficient number, since it is larger than the sum of its proper divisors (1).

27325296781 is an equidigital number, since it uses as much as digits as its factorization.

27325296781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 52.

The spelling of 27325296781 in words is "twenty-seven billion, three hundred twenty-five million, two hundred ninety-six thousand, seven hundred eighty-one".