11155166655 has 16 divisors (see below), whose sum is σ = 17946880224. Its totient is φ = 5916551040.

The previous prime is 11155166647. The next prime is 11155166677. The reversal of 11155166655 is 55666155111.

It is not a de Polignac number, because 11155166655 - 2³ = 11155166647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2051644 + ... + 2057073.

It is an arithmetic number, because the mean of its divisors is an integer number (1121680014).

Almost surely, 2^11155166655 is an apocalyptic number.

11155166655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11155166655 is a deficient number, since it is larger than the sum of its proper divisors (6791713569).

11155166655 is a wasteful number, since it uses less digits than its factorization.

11155166655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108906.

The product of its digits is 135000, while the sum is 42.

The spelling of 11155166655 in words is "eleven billion, one hundred fifty-five million, one hundred sixty-six thousand, six hundred fifty-five".