863138344305 has 32 divisors (see below), whose sum is σ = 1388389330944. Its totient is φ = 457887957696.

The previous prime is 863138344297. The next prime is 863138344331. The reversal of 863138344305 is 503443831368.

It is not a de Polignac number, because 863138344305 - 2³ = 863138344297 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3861822 + ... + 4079208.

It is an arithmetic number, because the mean of its divisors is an integer number (43387166592).

Almost surely, 2^863138344305 is an apocalyptic number.

It is an amenable number.

863138344305 is a deficient number, since it is larger than the sum of its proper divisors (525250986639).

863138344305 is a wasteful number, since it uses less digits than its factorization.

863138344305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218805.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 863138344305 in words is "eight hundred sixty-three billion, one hundred thirty-eight million, three hundred forty-four thousand, three hundred five".