27774222331 has 2 divisors, whose sum is σ = 27774222332. Its totient is φ = 27774222330.

The previous prime is 27774222313. The next prime is 27774222341. The reversal of 27774222331 is 13322247772.

Together with previous prime (27774222313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27774222331 - 2⁹ = 27774221819 is a prime.

It is a super-2 number, since 2×27774222331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27774222341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887111165 + 13887111166.

It is an arithmetic number, because the mean of its divisors is an integer number (13887111166).

Almost surely, 2^27774222331 is an apocalyptic number.

27774222331 is a deficient number, since it is larger than the sum of its proper divisors (1).

27774222331 is an equidigital number, since it uses as much as digits as its factorization.

27774222331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 40.

The spelling of 27774222331 in words is "twenty-seven billion, seven hundred seventy-four million, two hundred twenty-two thousand, three hundred thirty-one".