72213433216 has 32 divisors (see below), whose sum is σ = 144254789280. Its totient is φ = 36008309760.

The previous prime is 72213433213. The next prime is 72213433231. The reversal of 72213433216 is 61233431227.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72213433211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721645 + ... + 815596.

It is an arithmetic number, because the mean of its divisors is an integer number (4507962165).

Almost surely, 2^72213433216 is an apocalyptic number.

It is an amenable number.

72213433216 is a deficient number, since it is larger than the sum of its proper divisors (72041356064).

72213433216 is a wasteful number, since it uses less digits than its factorization.

72213433216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537622 (or 1537610 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The spelling of 72213433216 in words is "seventy-two billion, two hundred thirteen million, four hundred thirty-three thousand, two hundred sixteen".