65865751863 has 16 divisors (see below), whose sum is σ = 90665296896. Its totient is φ = 42488709120.

The previous prime is 65865751817. The next prime is 65865751879. The reversal of 65865751863 is 36815756856.

It is not a de Polignac number, because 65865751863 - 2⁶ = 65865751799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65865751797 and 65865751806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65865756863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 784695 + ... + 864567.

It is an arithmetic number, because the mean of its divisors is an integer number (5666581056).

Almost surely, 2^65865751863 is an apocalyptic number.

65865751863 is a deficient number, since it is larger than the sum of its proper divisors (24799545033).

65865751863 is a wasteful number, since it uses less digits than its factorization.

65865751863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88774.

The product of its digits is 36288000, while the sum is 60.

The spelling of 65865751863 in words is "sixty-five billion, eight hundred sixty-five million, seven hundred fifty-one thousand, eight hundred sixty-three".