8565412584961 has 2 divisors, whose sum is σ = 8565412584962. Its totient is φ = 8565412584960.

The previous prime is 8565412584959. The next prime is 8565412584997. The reversal of 8565412584961 is 1694852145658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7284088199025 + 1281324385936 = 2698905^2 + 1131956^2 .

It is a cyclic number.

It is not a de Polignac number, because 8565412584961 - 2¹ = 8565412584959 is a prime.

Together with 8565412584959, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 8565412584893 and 8565412584902.

It is not a weakly prime, because it can be changed into another prime (8565412534961) 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, 4282706292480 + 4282706292481.

It is an arithmetic number, because the mean of its divisors is an integer number (4282706292481).

Almost surely, 2^{8565412584961} is an apocalyptic number.

It is an amenable number.

8565412584961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8565412584961 is an equidigital number, since it uses as much as digits as its factorization.

8565412584961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944000, while the sum is 64.

The spelling of 8565412584961 in words is "eight trillion, five hundred sixty-five billion, four hundred twelve million, five hundred eighty-four thousand, nine hundred sixty-one".