71888831111111 has 16 divisors (see below), whose sum is σ = 87136202592768. Its totient is φ = 57973683160800.

The previous prime is 71888831111093. The next prime is 71888831111129. The reversal of 71888831111111 is 11111113888817.

It is an interprime number because it is at equal distance from previous prime (71888831111093) and next prime (71888831111129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71888831111111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71888831111111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71888831111011) 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, 3659944925 + ... + 3659964566.

It is an arithmetic number, because the mean of its divisors is an integer number (5446012662048).

Almost surely, 2^{71888831111111} is an apocalyptic number.

71888831111111 is a deficient number, since it is larger than the sum of its proper divisors (15247371481657).

71888831111111 is a wasteful number, since it uses less digits than its factorization.

71888831111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7319909582.

The product of its digits is 86016, while the sum is 50.

Adding to 71888831111111 its reverse (11111113888817), we get a palindrome (82999944999928).

The spelling of 71888831111111 in words is "seventy-one trillion, eight hundred eighty-eight billion, eight hundred thirty-one million, one hundred eleven thousand, one hundred eleven".