11266640055 has 128 divisors (see below), whose sum is σ = 22674263040. Its totient is φ = 5260308480.

The previous prime is 11266640053. The next prime is 11266640071. The reversal of 11266640055 is 55004666211.

Together with 11407622984 it forms a betrothed pair.

It is not a de Polignac number, because 11266640055 - 2¹ = 11266640053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11266640053) 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 127 ways as a sum of consecutive naturals, for example, 4660207 + ... + 4662623.

It is an arithmetic number, because the mean of its divisors is an integer number (177142680).

Almost surely, 2^11266640055 is an apocalyptic number.

11266640055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11266640055 is an abundant number, since it is smaller than the sum of its proper divisors (11407622985).

11266640055 is a wasteful number, since it uses less digits than its factorization.

11266640055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 11266640055 in words is "eleven billion, two hundred sixty-six million, six hundred forty thousand, fifty-five".