72144523232 has 48 divisors (see below), whose sum is σ = 145372594752. Its totient is φ = 35227845120.

The previous prime is 72144523201. The next prime is 72144523277. The reversal of 72144523232 is 23232544127.

It is a junction number, because it is equal to n+sod(n) for n = 72144523192 and 72144523201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641318 + ... + 745370.

It is an arithmetic number, because the mean of its divisors is an integer number (3028595724).

Almost surely, 2^72144523232 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 72144523232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72686297376).

72144523232 is an abundant number, since it is smaller than the sum of its proper divisors (73228071520).

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

72144523232 is a wasteful number, since it uses less digits than its factorization.

72144523232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104571 (or 104563 counting only the distinct ones).

The product of its digits is 80640, while the sum is 35.

The spelling of 72144523232 in words is "seventy-two billion, one hundred forty-four million, five hundred twenty-three thousand, two hundred thirty-two".