79338839040 has 528 divisors, whose sum is σ = 291915431808. Its totient is φ = 20651065344.

The previous prime is 79338839009. The next prime is 79338839053. The reversal of 79338839040 is 4093883397.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53498139 + ... + 53499621.

It is an arithmetic number, because the mean of its divisors is an integer number (552870136).

Almost surely, 2^79338839040 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 79338839040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145957715904).

79338839040 is an abundant number, since it is smaller than the sum of its proper divisors (212576592768).

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

79338839040 is a wasteful number, since it uses less digits than its factorization.

79338839040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 79338839040 in words is "seventy-nine billion, three hundred thirty-eight million, eight hundred thirty-nine thousand, forty".