446809276878161 has 2 divisors, whose sum is σ = 446809276878162. Its totient is φ = 446809276878160.

The previous prime is 446809276878077. The next prime is 446809276878163. The reversal of 446809276878161 is 161878672908644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380954510019136 + 65854766859025 = 19518056^2 + 8115095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-446809276878161 is a prime.

Together with 446809276878163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (446809276878163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223404638439080 + 223404638439081.

It is an arithmetic number, because the mean of its divisors is an integer number (223404638439081).

Almost surely, 2^{446809276878161} is an apocalyptic number.

It is an amenable number.

446809276878161 is a deficient number, since it is larger than the sum of its proper divisors (1).

446809276878161 is an equidigital number, since it uses as much as digits as its factorization.

446809276878161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1560674304, while the sum is 77.

The spelling of 446809276878161 in words is "four hundred forty-six trillion, eight hundred nine billion, two hundred seventy-six million, eight hundred seventy-eight thousand, one hundred sixty-one".