11166661155 has 32 divisors (see below), whose sum is σ = 19281346560. Its totient is φ = 5485910400.

The previous prime is 11166661147. The next prime is 11166661189. The reversal of 11166661155 is 55116666111.

11166661155 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 11166661155 - 2³ = 11166661147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 10.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 33630 + ... + 153180.

It is an arithmetic number, because the mean of its divisors is an integer number (602542080).

Almost surely, 2^11166661155 is an apocalyptic number.

11166661155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11166661155 is a deficient number, since it is larger than the sum of its proper divisors (8114685405).

11166661155 is a wasteful number, since it uses less digits than its factorization.

11166661155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120051.

The product of its digits is 32400, while the sum is 39.

The spelling of 11166661155 in words is "eleven billion, one hundred sixty-six million, six hundred sixty-one thousand, one hundred fifty-five".