72435135789 has 16 divisors (see below), whose sum is σ = 109928663040. Its totient is φ = 47112282720.

The previous prime is 72435135737. The next prime is 72435135791. The reversal of 72435135789 is 98753153427.

72435135789 is a `hidden beast` number, since 7 + 2 + 43 + 513 + 5 + 7 + 89 = 666.

It is not a de Polignac number, because 72435135789 - 2²¹ = 72433038637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72435135889) 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, 32715757 + ... + 32717970.

It is an arithmetic number, because the mean of its divisors is an integer number (6870541440).

Almost surely, 2^72435135789 is an apocalyptic number.

It is an amenable number.

72435135789 is a deficient number, since it is larger than the sum of its proper divisors (37493527251).

72435135789 is a wasteful number, since it uses less digits than its factorization.

72435135789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65433777 (or 65433771 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 72435135789 in words is "seventy-two billion, four hundred thirty-five million, one hundred thirty-five thousand, seven hundred eighty-nine".