803643108444 has 96 divisors (see below), whose sum is σ = 2334360672000. Its totient is φ = 236946358080.

The previous prime is 803643108397. The next prime is 803643108503. The reversal of 803643108444 is 444801346308.

It is a super-2 number, since 2×803643108444² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 803643108444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9097494 + ... + 9185405.

It is an arithmetic number, because the mean of its divisors is an integer number (24316257000).

Almost surely, 2^803643108444 is an apocalyptic number.

It is an amenable number.

803643108444 is an abundant number, since it is smaller than the sum of its proper divisors (1530717563556).

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

803643108444 is a wasteful number, since it uses less digits than its factorization.

803643108444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282960 (or 18282952 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 803643108444 in words is "eight hundred three billion, six hundred forty-three million, one hundred eight thousand, four hundred forty-four".