27270357731 has 2 divisors, whose sum is σ = 27270357732. Its totient is φ = 27270357730.

The previous prime is 27270357689. The next prime is 27270357733. The reversal of 27270357731 is 13775307272.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27270357731 is a prime.

It is a super-2 number, since 2×27270357731² (a number of 22 digits) contains 22 as substring.

Together with 27270357733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27270357733) 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, 13635178865 + 13635178866.

It is an arithmetic number, because the mean of its divisors is an integer number (13635178866).

Almost surely, 2^27270357731 is an apocalyptic number.

27270357731 is a deficient number, since it is larger than the sum of its proper divisors (1).

27270357731 is an equidigital number, since it uses as much as digits as its factorization.

27270357731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432180, while the sum is 44.

The spelling of 27270357731 in words is "twenty-seven billion, two hundred seventy million, three hundred fifty-seven thousand, seven hundred thirty-one".