803644811264 has 96 divisors (see below), whose sum is σ = 1730262643200. Its totient is φ = 371774914560.

The previous prime is 803644811209. The next prime is 803644811311. The reversal of 803644811264 is 462118446308.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858529 + ... + 2249759.

It is an arithmetic number, because the mean of its divisors is an integer number (18023569200).

Almost surely, 2^803644811264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 803644811264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (865131321600).

803644811264 is an abundant number, since it is smaller than the sum of its proper divisors (926617831936).

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

803644811264 is a wasteful number, since it uses less digits than its factorization.

803644811264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391329 (or 391309 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 803644811264 in words is "eight hundred three billion, six hundred forty-four million, eight hundred eleven thousand, two hundred sixty-four".