11111101143 has 16 divisors (see below), whose sum is σ = 15957194880. Its totient is φ = 6854337504.

The previous prime is 11111101109. The next prime is 11111101153. The reversal of 11111101143 is 34110111111.

It is a de Polignac number, because none of the positive numbers 2^k-11111101143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111101103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2264196 + ... + 2269097.

It is an arithmetic number, because the mean of its divisors is an integer number (997324680).

Almost surely, 2^11111101143 is an apocalyptic number.

11111101143 is a deficient number, since it is larger than the sum of its proper divisors (4846093737).

11111101143 is a wasteful number, since it uses less digits than its factorization.

11111101143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4533358.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 11111101143 its reverse (34110111111), we get a palindrome (45221212254).

The spelling of 11111101143 in words is "eleven billion, one hundred eleven million, one hundred one thousand, one hundred forty-three".