72236856384 has 336 divisors, whose sum is σ = 258589393920. Its totient is φ = 18730552320.

The previous prime is 72236856347. The next prime is 72236856389. The reversal of 72236856384 is 48365863227.

72236856384 is a `hidden beast` number, since 72 + 2 + 3 + 6 + 8 + 563 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a self number, because there is not a number n which added to its sum of digits gives 72236856384.

It is not an unprimeable number, because it can be changed into a prime (72236856389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36500707 + ... + 36502685.

Almost surely, 2^72236856384 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 72236856384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129294696960).

72236856384 is an abundant number, since it is smaller than the sum of its proper divisors (186352537536).

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

72236856384 is a wasteful number, since it uses less digits than its factorization.

72236856384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2838 (or 2825 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 54.

The spelling of 72236856384 in words is "seventy-two billion, two hundred thirty-six million, eight hundred fifty-six thousand, three hundred eighty-four".