263865116265 has 8 divisors (see below), whose sum is σ = 422184186048. Its totient is φ = 140728062000.

The previous prime is 263865116231. The next prime is 263865116267. The reversal of 263865116265 is 562611568362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 263865116265 - 2¹¹ = 263865114217 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (263865116267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8795503861 + ... + 8795503890.

It is an arithmetic number, because the mean of its divisors is an integer number (52773023256).

Almost surely, 2^263865116265 is an apocalyptic number.

It is an amenable number.

263865116265 is a deficient number, since it is larger than the sum of its proper divisors (158319069783).

263865116265 is a wasteful number, since it uses less digits than its factorization.

263865116265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17591007759.

The product of its digits is 3110400, while the sum is 51.

The spelling of 263865116265 in words is "two hundred sixty-three billion, eight hundred sixty-five million, one hundred sixteen thousand, two hundred sixty-five".