72243336560 has 80 divisors (see below), whose sum is σ = 169771321440. Its totient is φ = 28587187200.

The previous prime is 72243336547. The next prime is 72243336563. The reversal of 72243336560 is 6563334227.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72243336563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11979626 + ... + 11985654.

It is an arithmetic number, because the mean of its divisors is an integer number (2122141518).

Almost surely, 2^72243336560 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 72243336560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84885660720).

72243336560 is an abundant number, since it is smaller than the sum of its proper divisors (97527984880).

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

72243336560 is a wasteful number, since it uses less digits than its factorization.

72243336560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7626 (or 7620 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 41.

The spelling of 72243336560 in words is "seventy-two billion, two hundred forty-three million, three hundred thirty-six thousand, five hundred sixty".