72169260717 has 16 divisors (see below), whose sum is σ = 101295936000. Its totient is φ = 45578000304.

The previous prime is 72169260707. The next prime is 72169260719. The reversal of 72169260717 is 71706296127.

It is a happy number.

It is not a de Polignac number, because 72169260717 - 2¹¹ = 72169258669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72169260719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1751134 + ... + 1791872.

It is an arithmetic number, because the mean of its divisors is an integer number (6330996000).

Almost surely, 2^72169260717 is an apocalyptic number.

It is an amenable number.

72169260717 is a deficient number, since it is larger than the sum of its proper divisors (29126675283).

72169260717 is a wasteful number, since it uses less digits than its factorization.

72169260717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71840.

The product of its (nonzero) digits is 444528, while the sum is 48.

The spelling of 72169260717 in words is "seventy-two billion, one hundred sixty-nine million, two hundred sixty thousand, seven hundred seventeen".