72381733308 has 72 divisors (see below), whose sum is σ = 185875417728. Its totient is φ = 23745663648.

The previous prime is 72381733261. The next prime is 72381733321. The reversal of 72381733308 is 80333718327.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 739791 + ... + 831897.

It is an arithmetic number, because the mean of its divisors is an integer number (2581603024).

Almost surely, 2^72381733308 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 72381733308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92937708864).

72381733308 is an abundant number, since it is smaller than the sum of its proper divisors (113493684420).

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

72381733308 is a wasteful number, since it uses less digits than its factorization.

72381733308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92463 (or 92458 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

It can be divided in two parts, 7238173 and 3308, that added together give a square (7241481 = 2691²).

The spelling of 72381733308 in words is "seventy-two billion, three hundred eighty-one million, seven hundred thirty-three thousand, three hundred eight".