11766555111 has 16 divisors (see below), whose sum is σ = 16116884064. Its totient is φ = 7630406784.

The previous prime is 11766555107. The next prime is 11766555121. The reversal of 11766555111 is 11155566711.

It is not a de Polignac number, because 11766555111 - 2² = 11766555107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11766555111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11766555121) 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, 514165 + ... + 536561.

It is an arithmetic number, because the mean of its divisors is an integer number (1007305254).

Almost surely, 2^11766555111 is an apocalyptic number.

11766555111 is a deficient number, since it is larger than the sum of its proper divisors (4350328953).

11766555111 is a wasteful number, since it uses less digits than its factorization.

11766555111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27170.

The product of its digits is 31500, while the sum is 39.

The spelling of 11766555111 in words is "eleven billion, seven hundred sixty-six million, five hundred fifty-five thousand, one hundred eleven".