72381737288 has 96 divisors (see below), whose sum is σ = 168569501760. Its totient is φ = 28981814400.

The previous prime is 72381737273. The next prime is 72381737291. The reversal of 72381737288 is 88273718327.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 294338 + ... + 481038.

It is an arithmetic number, because the mean of its divisors is an integer number (1755932310).

Almost surely, 2^72381737288 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 72381737288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84284750880).

72381737288 is an abundant number, since it is smaller than the sum of its proper divisors (96187764472).

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

72381737288 is a wasteful number, since it uses less digits than its factorization.

72381737288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186787 (or 186776 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 56.

The spelling of 72381737288 in words is "seventy-two billion, three hundred eighty-one million, seven hundred thirty-seven thousand, two hundred eighty-eight".