72444379218 has 32 divisors (see below), whose sum is σ = 151690795200. Its totient is φ = 23034518976.

The previous prime is 72444379177. The next prime is 72444379277. The reversal of 72444379218 is 81297344427.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2493673 + ... + 2522556.

It is an arithmetic number, because the mean of its divisors is an integer number (4740337350).

Almost surely, 2^72444379218 is an apocalyptic number.

72444379218 is an abundant number, since it is smaller than the sum of its proper divisors (79246415982).

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

72444379218 is a wasteful number, since it uses less digits than its factorization.

72444379218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016346.

The product of its digits is 2709504, while the sum is 51.

The spelling of 72444379218 in words is "seventy-two billion, four hundred forty-four million, three hundred seventy-nine thousand, two hundred eighteen".