72135611 has 8 divisors (see below), whose sum is σ = 74251200. Its totient is φ = 70050240.

The previous prime is 72135601. The next prime is 72135629. The reversal of 72135611 is 11653127.

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

It is a cyclic number.

It is not a de Polignac number, because 72135611 - 2¹⁴ = 72119227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72135601) 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, 2666 + ... + 12303.

It is an arithmetic number, because the mean of its divisors is an integer number (9281400).

Almost surely, 2^72135611 is an apocalyptic number.

72135611 is a deficient number, since it is larger than the sum of its proper divisors (2115589).

72135611 is a wasteful number, since it uses less digits than its factorization.

72135611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15109.

The product of its digits is 1260, while the sum is 26.

The square root of 72135611 is about 8493.2685698734. The cubic root of 72135611 is about 416.2777880669.

Adding to 72135611 its reverse (11653127), we get a palindrome (83788738).

The spelling of 72135611 in words is "seventy-two million, one hundred thirty-five thousand, six hundred eleven".