72730001011 has 16 divisors (see below), whose sum is σ = 77998500864. Its totient is φ = 67639692384.

The previous prime is 72730001009. The next prime is 72730001033. The reversal of 72730001011 is 11010003727.

It is a cyclic number.

It is not a de Polignac number, because 72730001011 - 2¹ = 72730001009 is a prime.

It is a super-2 number, since 2×72730001011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72730001111) 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, 1201866 + ... + 1260928.

It is an arithmetic number, because the mean of its divisors is an integer number (4874906304).

Almost surely, 2^72730001011 is an apocalyptic number.

72730001011 is a deficient number, since it is larger than the sum of its proper divisors (5268499853).

72730001011 is a wasteful number, since it uses less digits than its factorization.

72730001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60570.

The product of its (nonzero) digits is 294, while the sum is 22.

Adding to 72730001011 its reverse (11010003727), we get a palindrome (83740004738).

The spelling of 72730001011 in words is "seventy-two billion, seven hundred thirty million, one thousand, eleven".