11055566511 has 12 divisors (see below), whose sum is σ = 17420892840. Its totient is φ = 6700343280.

The previous prime is 11055566479. The next prime is 11055566521. The reversal of 11055566511 is 11566555011.

It is a happy number.

It is not a de Polignac number, because 11055566511 - 2⁵ = 11055566479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055566521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55836096 + ... + 55836293.

It is an arithmetic number, because the mean of its divisors is an integer number (1451741070).

Almost surely, 2^11055566511 is an apocalyptic number.

11055566511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11055566511 is a deficient number, since it is larger than the sum of its proper divisors (6365326329).

11055566511 is a wasteful number, since it uses less digits than its factorization.

11055566511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111672406 (or 111672403 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 11055566511 in words is "eleven billion, fifty-five million, five hundred sixty-six thousand, five hundred eleven".