72218241152 has 24 divisors (see below), whose sum is σ = 143878334565. Its totient is φ = 36107600384.

The previous prime is 72218241107. The next prime is 72218241163. The reversal of 72218241152 is 25114281227.

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 68782405696 + 3435835456 = 262264^2 + 58616^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=190024.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3028508 + ... + 3052260.

Almost surely, 2^72218241152 is an apocalyptic number.

It is an amenable number.

72218241152 is a deficient number, since it is larger than the sum of its proper divisors (71660093413).

72218241152 is an frugal number, since it uses more digits than its factorization.

72218241152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47520 (or 23755 counting only the distinct ones).

The product of its digits is 17920, while the sum is 35.

The spelling of 72218241152 in words is "seventy-two billion, two hundred eighteen million, two hundred forty-one thousand, one hundred fifty-two".