72660226044 has 144 divisors (see below), whose sum is σ = 204577833600. Its totient is φ = 19989535104.

The previous prime is 72660226019. The next prime is 72660226081. The reversal of 72660226044 is 44062206627.

It is a junction number, because it is equal to n+sod(n) for n = 72660225993 and 72660226011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6457087 + ... + 6468329.

It is an arithmetic number, because the mean of its divisors is an integer number (1420679400).

Almost surely, 2^72660226044 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 72660226044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102288916800).

72660226044 is an abundant number, since it is smaller than the sum of its proper divisors (131917607556).

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

72660226044 is a wasteful number, since it uses less digits than its factorization.

72660226044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11672 (or 11663 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 72660226044 in words is "seventy-two billion, six hundred sixty million, two hundred twenty-six thousand, forty-four".