72011010011111 has 4 divisors (see below), whose sum is σ = 72011033146752. Its totient is φ = 72010986875472.

The previous prime is 72011010011041. The next prime is 72011010011119. The reversal of 72011010011111 is 11111001011027.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72011010011111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72011010011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72011010011119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6008366 + ... + 13420971.

It is an arithmetic number, because the mean of its divisors is an integer number (18002758286688).

Almost surely, 2^{72011010011111} is an apocalyptic number.

72011010011111 is a deficient number, since it is larger than the sum of its proper divisors (23135641).

72011010011111 is a wasteful number, since it uses less digits than its factorization.

72011010011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23135640.

The product of its (nonzero) digits is 14, while the sum is 17.

Adding to 72011010011111 its reverse (11111001011027), we get a palindrome (83122011022138).

The spelling of 72011010011111 in words is "seventy-two trillion, eleven billion, ten million, eleven thousand, one hundred eleven".