865263705397 has 16 divisors (see below), whose sum is σ = 1075279179520. Its totient is φ = 677957599872.

The previous prime is 865263705373. The next prime is 865263705469. The reversal of 865263705397 is 793507362568.

It is not a de Polignac number, because 865263705397 - 2¹⁵ = 865263672629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865263705347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46147872 + ... + 46166617.

It is an arithmetic number, because the mean of its divisors is an integer number (67204948720).

Almost surely, 2^865263705397 is an apocalyptic number.

It is an amenable number.

865263705397 is a deficient number, since it is larger than the sum of its proper divisors (210015474123).

865263705397 is a wasteful number, since it uses less digits than its factorization.

865263705397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92314612.

The product of its (nonzero) digits is 57153600, while the sum is 61.

The spelling of 865263705397 in words is "eight hundred sixty-five billion, two hundred sixty-three million, seven hundred five thousand, three hundred ninety-seven".