27565941943073 has 2 divisors, whose sum is σ = 27565941943074. Its totient is φ = 27565941943072.

The previous prime is 27565941943069. The next prime is 27565941943079. The reversal of 27565941943073 is 37034914956572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22908926150929 + 4657015792144 = 4786327^2 + 2158012^2 .

It is a cyclic number.

It is not a de Polignac number, because 27565941943073 - 2² = 27565941943069 is a prime.

It is not a weakly prime, because it can be changed into another prime (27565941943079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13782970971536 + 13782970971537.

It is an arithmetic number, because the mean of its divisors is an integer number (13782970971537).

Almost surely, 2^{27565941943073} is an apocalyptic number.

It is an amenable number.

27565941943073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27565941943073 is an equidigital number, since it uses as much as digits as its factorization.

27565941943073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 171460800, while the sum is 65.

The spelling of 27565941943073 in words is "twenty-seven trillion, five hundred sixty-five billion, nine hundred forty-one million, nine hundred forty-three thousand, seventy-three".