864495594461 has 2 divisors, whose sum is σ = 864495594462. Its totient is φ = 864495594460.

The previous prime is 864495594439. The next prime is 864495594539. The reversal of 864495594461 is 164495594468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432577182436 + 431918412025 = 657706^2 + 657205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864495594461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864492594461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432247797230 + 432247797231.

It is an arithmetic number, because the mean of its divisors is an integer number (432247797231).

Almost surely, 2^864495594461 is an apocalyptic number.

It is an amenable number.

864495594461 is a deficient number, since it is larger than the sum of its proper divisors (1).

864495594461 is an equidigital number, since it uses as much as digits as its factorization.

864495594461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 149299200, while the sum is 65.

The spelling of 864495594461 in words is "eight hundred sixty-four billion, four hundred ninety-five million, five hundred ninety-four thousand, four hundred sixty-one".