72743311111 has 8 divisors (see below), whose sum is σ = 75953161440. Its totient is φ = 69537385632.

The previous prime is 72743311037. The next prime is 72743311133. The reversal of 72743311111 is 11111334727.

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 72743311111 - 2⁹ = 72743310599 is a prime.

It is a super-2 number, since 2×72743311111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72743311181) 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, 943296 + ... + 1017493.

It is an arithmetic number, because the mean of its divisors is an integer number (9494145180).

Almost surely, 2^72743311111 is an apocalyptic number.

72743311111 is a deficient number, since it is larger than the sum of its proper divisors (3209850329).

72743311111 is a wasteful number, since it uses less digits than its factorization.

72743311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962425.

The product of its digits is 3528, while the sum is 31.

Adding to 72743311111 its reverse (11111334727), we get a palindrome (83854645838).

The spelling of 72743311111 in words is "seventy-two billion, seven hundred forty-three million, three hundred eleven thousand, one hundred eleven".