865518452837213 has 48 divisors (see below), whose sum is σ = 1061458401705984. Its totient is φ = 702639997204320.

The previous prime is 865518452837209. The next prime is 865518452837239. The reversal of 865518452837213 is 312738254815568.

It is not a de Polignac number, because 865518452837213 - 2² = 865518452837209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865518452837713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2041842056 + ... + 2042265902.

It is an arithmetic number, because the mean of its divisors is an integer number (22113716702208).

Almost surely, 2^{865518452837213} is an apocalyptic number.

It is an amenable number.

865518452837213 is a deficient number, since it is larger than the sum of its proper divisors (195939948868771).

865518452837213 is a wasteful number, since it uses less digits than its factorization.

865518452837213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452542 (or 452535 counting only the distinct ones).

The product of its digits is 387072000, while the sum is 68.

The spelling of 865518452837213 in words is "eight hundred sixty-five trillion, five hundred eighteen billion, four hundred fifty-two million, eight hundred thirty-seven thousand, two hundred thirteen".