27474231481 has 2 divisors, whose sum is σ = 27474231482. Its totient is φ = 27474231480.

The previous prime is 27474231467. The next prime is 27474231517. The reversal of 27474231481 is 18413247472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26771504400 + 702727081 = 163620^2 + 26509^2 .

It is a cyclic number.

It is not a de Polignac number, because 27474231481 - 2⁷ = 27474231353 is a prime.

It is a super-2 number, since 2×27474231481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27474231431) 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, 13737115740 + 13737115741.

It is an arithmetic number, because the mean of its divisors is an integer number (13737115741).

Almost surely, 2^27474231481 is an apocalyptic number.

It is an amenable number.

27474231481 is a deficient number, since it is larger than the sum of its proper divisors (1).

27474231481 is an equidigital number, since it uses as much as digits as its factorization.

27474231481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 43.

The spelling of 27474231481 in words is "twenty-seven billion, four hundred seventy-four million, two hundred thirty-one thousand, four hundred eighty-one".