27417773081 has 2 divisors, whose sum is σ = 27417773082. Its totient is φ = 27417773080.

The previous prime is 27417773059. The next prime is 27417773107. The reversal of 27417773081 is 18037771472.

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., 21988441225 + 5429331856 = 148285^2 + 73684^2 .

It is a cyclic number.

It is not a de Polignac number, because 27417773081 - 2¹⁴ = 27417756697 is a prime.

It is a super-2 number, since 2×27417773081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27417773051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13708886540 + 13708886541.

It is an arithmetic number, because the mean of its divisors is an integer number (13708886541).

Almost surely, 2^27417773081 is an apocalyptic number.

It is an amenable number.

27417773081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27417773081 is an equidigital number, since it uses as much as digits as its factorization.

27417773081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460992, while the sum is 47.

The spelling of 27417773081 in words is "twenty-seven billion, four hundred seventeen million, seven hundred seventy-three thousand, eighty-one".