863528803803 has 64 divisors (see below), whose sum is σ = 1334244472320. Its totient is φ = 551453671296.

The previous prime is 863528803801. The next prime is 863528803817. The reversal of 863528803803 is 308308825368.

863528803803 is a `hidden beast` number, since 8 + 6 + 3 + 528 + 80 + 38 + 0 + 3 = 666.

It is not a de Polignac number, because 863528803803 - 2¹ = 863528803801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863528803803.

It is not an unprimeable number, because it can be changed into a prime (863528803801) 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 63 ways as a sum of consecutive naturals, for example, 197918700 + ... + 197923062.

It is an arithmetic number, because the mean of its divisors is an integer number (20847569880).

Almost surely, 2^863528803803 is an apocalyptic number.

863528803803 is a deficient number, since it is larger than the sum of its proper divisors (470715668517).

863528803803 is a wasteful number, since it uses less digits than its factorization.

863528803803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433 (or 7427 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 863528803803 in words is "eight hundred sixty-three billion, five hundred twenty-eight million, eight hundred three thousand, eight hundred three".