11142145511 has 16 divisors (see below), whose sum is σ = 12942768384. Its totient is φ = 9394736064.

The previous prime is 11142145481. The next prime is 11142145513. The reversal of 11142145511 is 11554124111.

It is not a de Polignac number, because 11142145511 - 2¹⁰ = 11142144487 is a prime.

It is a super-2 number, since 2×11142145511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142145513) 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, 94220 + ... + 176526.

It is an arithmetic number, because the mean of its divisors is an integer number (808923024).

Almost surely, 2^11142145511 is an apocalyptic number.

11142145511 is a deficient number, since it is larger than the sum of its proper divisors (1800622873).

11142145511 is an equidigital number, since it uses as much as digits as its factorization.

11142145511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82630.

The product of its digits is 800, while the sum is 26.

Adding to 11142145511 its reverse (11554124111), we get a palindrome (22696269622).

The spelling of 11142145511 in words is "eleven billion, one hundred forty-two million, one hundred forty-five thousand, five hundred eleven".