72504349211 has 4 divisors (see below), whose sum is σ = 82862113392. Its totient is φ = 62146585032.

The previous prime is 72504349187. The next prime is 72504349231. The reversal of 72504349211 is 11294340527.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 72504349211 - 2³⁰ = 71430607387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72504349231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5178882080 + ... + 5178882093.

It is an arithmetic number, because the mean of its divisors is an integer number (20715528348).

Almost surely, 2^72504349211 is an apocalyptic number.

72504349211 is a deficient number, since it is larger than the sum of its proper divisors (10357764181).

72504349211 is a wasteful number, since it uses less digits than its factorization.

72504349211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10357764180.

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 72504349211 its reverse (11294340527), we get a palindrome (83798689738).

The spelling of 72504349211 in words is "seventy-two billion, five hundred four million, three hundred forty-nine thousand, two hundred eleven".