72239007017 has 4 divisors (see below), whose sum is σ = 72239701716. Its totient is φ = 72238312320.

The previous prime is 72239007011. The next prime is 72239007031. The reversal of 72239007017 is 71070093227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 30402804496 + 41836202521 = 174364^2 + 204539^2 .

It is a cyclic number.

It is not a de Polignac number, because 72239007017 - 2⁸ = 72239006761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72239007011) 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 3 ways as a sum of consecutive naturals, for example, 156368 + ... + 411009.

It is an arithmetic number, because the mean of its divisors is an integer number (18059925429).

Almost surely, 2^72239007017 is an apocalyptic number.

It is an amenable number.

72239007017 is a deficient number, since it is larger than the sum of its proper divisors (694699).

72239007017 is a wasteful number, since it uses less digits than its factorization.

72239007017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694698.

The product of its (nonzero) digits is 37044, while the sum is 38.

The spelling of 72239007017 in words is "seventy-two billion, two hundred thirty-nine million, seven thousand, seventeen".