863998782039 has 12 divisors (see below), whose sum is σ = 1321409902176. Its totient is φ = 542116882752.

The previous prime is 863998782013. The next prime is 863998782041. The reversal of 863998782039 is 930287899368.

863998782039 is a `hidden beast` number, since 86 + 399 + 87 + 82 + 0 + 3 + 9 = 666.

863998782039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 863998782039 - 2⁸ = 863998781783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863998784039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2823525279 + ... + 2823525584.

It is an arithmetic number, because the mean of its divisors is an integer number (110117491848).

Almost surely, 2^863998782039 is an apocalyptic number.

863998782039 is a deficient number, since it is larger than the sum of its proper divisors (457411120137).

863998782039 is a wasteful number, since it uses less digits than its factorization.

863998782039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647050886 (or 5647050883 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 863998782039 in words is "eight hundred sixty-three billion, nine hundred ninety-eight million, seven hundred eighty-two thousand, thirty-nine".