865245263090416 has 20 divisors (see below), whose sum is σ = 1805367520102552. Its totient is φ = 399343967580096.

The previous prime is 865245263090399. The next prime is 865245263090437. The reversal of 865245263090416 is 614090362542568.

It is a super-3 number, since 3×865245263090416³ (a number of 46 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2079916497606 + ... + 2079916498021.

Almost surely, 2^{865245263090416} is an apocalyptic number.

It is an amenable number.

865245263090416 is an abundant number, since it is smaller than the sum of its proper divisors (940122257012136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865245263090416 is a wasteful number, since it uses less digits than its factorization.

865245263090416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159832995648 (or 4159832995642 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 61.

The spelling of 865245263090416 in words is "eight hundred sixty-five trillion, two hundred forty-five billion, two hundred sixty-three million, ninety thousand, four hundred sixteen".