865797594481 has 4 divisors (see below), whose sum is σ = 866428184052. Its totient is φ = 865167004912.

The previous prime is 865797594463. The next prime is 865797594503. The reversal of 865797594481 is 184495797568.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 459671796081 + 406125798400 = 677991^2 + 637280^2 .

It is a cyclic number.

It is not a de Polignac number, because 865797594481 - 2⁵ = 865797594449 is a prime.

It is a super-2 number, since 2×865797594481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865797594461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315292726 + ... + 315295471.

It is an arithmetic number, because the mean of its divisors is an integer number (216607046013).

Almost surely, 2^865797594481 is an apocalyptic number.

It is an amenable number.

865797594481 is a deficient number, since it is larger than the sum of its proper divisors (630589571).

865797594481 is a wasteful number, since it uses less digits than its factorization.

865797594481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630589570.

The product of its digits is 609638400, while the sum is 73.

The spelling of 865797594481 in words is "eight hundred sixty-five billion, seven hundred ninety-seven million, five hundred ninety-four thousand, four hundred eighty-one".