79803944544 has 48 divisors (see below), whose sum is σ = 210872712960. Its totient is φ = 26425142400.

The previous prime is 79803944513. The next prime is 79803944557. The reversal of 79803944544 is 44544930897.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2738124 + ... + 2767115.

It is an arithmetic number, because the mean of its divisors is an integer number (4393181520).

Almost surely, 2^79803944544 is an apocalyptic number.

It is an amenable number.

79803944544 is an abundant number, since it is smaller than the sum of its proper divisors (131068768416).

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

79803944544 is a wasteful number, since it uses less digits than its factorization.

79803944544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505403 (or 5505395 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 79803944544 in words is "seventy-nine billion, eight hundred three million, nine hundred forty-four thousand, five hundred forty-four".