863218447850 has 48 divisors (see below), whose sum is σ = 1781236038240. Its totient is φ = 308577307200.

The previous prime is 863218447841. The next prime is 863218447867. The reversal of 863218447850 is 58744812368.

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 23 ways as a sum of consecutive naturals, for example, 13268297 + ... + 13333196.

It is an arithmetic number, because the mean of its divisors is an integer number (37109084130).

Almost surely, 2^863218447850 is an apocalyptic number.

863218447850 is an abundant number, since it is smaller than the sum of its proper divisors (918017590390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863218447850 is a wasteful number, since it uses less digits than its factorization.

863218447850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26601575 (or 26601570 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 863218447850 in words is "eight hundred sixty-three billion, two hundred eighteen million, four hundred forty-seven thousand, eight hundred fifty".