865873788311 has 32 divisors (see below), whose sum is σ = 1022955225600. Its totient is φ = 732500943552.

The previous prime is 865873788257. The next prime is 865873788313. The reversal of 865873788311 is 113887378568.

It is not a de Polignac number, because 865873788311 - 2³⁴ = 848693919127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865873788313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29393756 + ... + 29423198.

It is an arithmetic number, because the mean of its divisors is an integer number (31967350800).

Almost surely, 2^865873788311 is an apocalyptic number.

865873788311 is a deficient number, since it is larger than the sum of its proper divisors (157081437289).

865873788311 is a wasteful number, since it uses less digits than its factorization.

865873788311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30580 (or 30566 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 65.

The spelling of 865873788311 in words is "eight hundred sixty-five billion, eight hundred seventy-three million, seven hundred eighty-eight thousand, three hundred eleven".