72203040032 has 18 divisors (see below), whose sum is σ = 142152727689. Its totient is φ = 36100760000.

The previous prime is 72203040031. The next prime is 72203040043. The reversal of 72203040032 is 23004030227.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 71586213136 + 616826896 = 267556^2 + 24836^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=190004.

It is a super-2 number, since 2×72203040032² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72203040031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1496282 + ... + 1543782.

Almost surely, 2^72203040032 is an apocalyptic number.

It is an amenable number.

72203040032 is a deficient number, since it is larger than the sum of its proper divisors (69949687657).

72203040032 is an frugal number, since it uses more digits than its factorization.

72203040032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95012 (or 47503 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

Adding to 72203040032 its reverse (23004030227), we get a palindrome (95207070259).

The spelling of 72203040032 in words is "seventy-two billion, two hundred three million, forty thousand, thirty-two".