79381840320 has 336 divisors, whose sum is σ = 284273353728. Its totient is φ = 21084779520.

The previous prime is 79381840309. The next prime is 79381840361. The reversal of 79381840320 is 2304818397.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 21071077 + ... + 21074843.

It is an arithmetic number, because the mean of its divisors is an integer number (846051648).

Almost surely, 2^79381840320 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 79381840320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142136676864).

79381840320 is an abundant number, since it is smaller than the sum of its proper divisors (204891513408).

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

79381840320 is a wasteful number, since it uses less digits than its factorization.

79381840320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070 (or 4048 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 79381840320 in words is "seventy-nine billion, three hundred eighty-one million, eight hundred forty thousand, three hundred twenty".