72213728441 has 16 divisors (see below), whose sum is σ = 76065937920. Its totient is φ = 68464796160.

The previous prime is 72213728437. The next prime is 72213728453. The reversal of 72213728441 is 14482731227.

It is a cyclic number.

It is not a de Polignac number, because 72213728441 - 2² = 72213728437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72213728641) 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, 468521 + ... + 603273.

It is an arithmetic number, because the mean of its divisors is an integer number (4754121120).

Almost surely, 2^72213728441 is an apocalyptic number.

It is an amenable number.

72213728441 is a deficient number, since it is larger than the sum of its proper divisors (3852209479).

72213728441 is a wasteful number, since it uses less digits than its factorization.

72213728441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135136.

The product of its digits is 150528, while the sum is 41.

The spelling of 72213728441 in words is "seventy-two billion, two hundred thirteen million, seven hundred twenty-eight thousand, four hundred forty-one".