863881138795 has 8 divisors (see below), whose sum is σ = 1036764087840. Its totient is φ = 691033763520.

The previous prime is 863881138787. The next prime is 863881138807. The reversal of 863881138795 is 597831188368.

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

It is not a de Polignac number, because 863881138795 - 2³ = 863881138787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863881138795.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8839986 + ... + 8937175.

It is an arithmetic number, because the mean of its divisors is an integer number (129595510980).

Almost surely, 2^863881138795 is an apocalyptic number.

863881138795 is a deficient number, since it is larger than the sum of its proper divisors (172882949045).

863881138795 is a wasteful number, since it uses less digits than its factorization.

863881138795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17786885.

The product of its digits is 69672960, while the sum is 67.

The spelling of 863881138795 in words is "eight hundred sixty-three billion, eight hundred eighty-one million, one hundred thirty-eight thousand, seven hundred ninety-five".