79438357824 has 84 divisors (see below), whose sum is σ = 244495893024. Its totient is φ = 22696670976.

The previous prime is 79438357811. The next prime is 79438357841. The reversal of 79438357824 is 42875383497.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (84).

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 11 ways as a sum of consecutive naturals, for example, 4212444 + ... + 4231259.

Almost surely, 2^79438357824 is an apocalyptic number.

It is an amenable number.

79438357824 is an abundant number, since it is smaller than the sum of its proper divisors (165057535200).

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

79438357824 is a wasteful number, since it uses less digits than its factorization.

79438357824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8443732 (or 8443715 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 60.

The spelling of 79438357824 in words is "seventy-nine billion, four hundred thirty-eight million, three hundred fifty-seven thousand, eight hundred twenty-four".