11514551111 has 24 divisors (see below), whose sum is σ = 13996675584. Its totient is φ = 9427110000.

The previous prime is 11514551107. The next prime is 11514551117. The reversal of 11514551111 is 11115541511.

11514551111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11514551111 - 2² = 11514551107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11514551117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 830486 + ... + 844236.

It is an arithmetic number, because the mean of its divisors is an integer number (583194816).

Almost surely, 2^11514551111 is an apocalyptic number.

11514551111 is a deficient number, since it is larger than the sum of its proper divisors (2482124473).

11514551111 is a wasteful number, since it uses less digits than its factorization.

11514551111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14531 (or 14524 counting only the distinct ones).

The product of its digits is 500, while the sum is 26.

The spelling of 11514551111 in words is "eleven billion, five hundred fourteen million, five hundred fifty-one thousand, one hundred eleven".