72504609409 has 8 divisors (see below), whose sum is σ = 72564262848. Its totient is φ = 72444984720.

The previous prime is 72504609403. The next prime is 72504609449. The reversal of 72504609409 is 90490640527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72504609409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72504609403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8895474 + ... + 8903620.

It is an arithmetic number, because the mean of its divisors is an integer number (9070532856).

Almost surely, 2^72504609409 is an apocalyptic number.

It is an amenable number.

72504609409 is a deficient number, since it is larger than the sum of its proper divisors (59653439).

72504609409 is a wasteful number, since it uses less digits than its factorization.

72504609409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14375.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 72504609409 in words is "seventy-two billion, five hundred four million, six hundred nine thousand, four hundred nine".