27447304705669 has 2 divisors, whose sum is σ = 27447304705670. Its totient is φ = 27447304705668.

The previous prime is 27447304705609. The next prime is 27447304705697. The reversal of 27447304705669 is 96650740374472.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26760498033025 + 686806672644 = 5173055^2 + 828738^2 .

It is a cyclic number.

It is not a de Polignac number, because 27447304705669 - 2²³ = 27447296317061 is a prime.

It is a super-2 number, since 2×27447304705669² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27447304705669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27447304705609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13723652352834 + 13723652352835.

It is an arithmetic number, because the mean of its divisors is an integer number (13723652352835).

Almost surely, 2^{27447304705669} is an apocalyptic number.

It is an amenable number.

27447304705669 is a deficient number, since it is larger than the sum of its proper divisors (1).

27447304705669 is an equidigital number, since it uses as much as digits as its factorization.

27447304705669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 27447304705669 in words is "twenty-seven trillion, four hundred forty-seven billion, three hundred four million, seven hundred five thousand, six hundred sixty-nine".