11155065660 has 72 divisors (see below), whose sum is σ = 35090271216. Its totient is φ = 2974682880.

The previous prime is 11155065629. The next prime is 11155065667. The reversal of 11155065660 is 6656055111.

11155065660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11155065660² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155065667) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1142781 + ... + 1152500.

It is an arithmetic number, because the mean of its divisors is an integer number (487364878).

Almost surely, 2^11155065660 is an apocalyptic number.

11155065660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11155065660 is an abundant number, since it is smaller than the sum of its proper divisors (23935205556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155065660 is a wasteful number, since it uses less digits than its factorization.

11155065660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295305 (or 2295291 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 11155065660 in words is "eleven billion, one hundred fifty-five million, sixty-five thousand, six hundred sixty".