11105665020 has 72 divisors (see below), whose sum is σ = 33695966304. Its totient is φ = 2960738688.

The previous prime is 11105665003. The next prime is 11105665031. The reversal of 11105665020 is 2056650111.

It is a happy number.

11105665020 is a `hidden beast` number, since 1 + 1 + 1 + 0 + 5 + 6 + 650 + 2 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1132177 + ... + 1141943.

It is an arithmetic number, because the mean of its divisors is an integer number (467999532).

Almost surely, 2^11105665020 is an apocalyptic number.

11105665020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11105665020 is an abundant number, since it is smaller than the sum of its proper divisors (22590301284).

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

11105665020 is a wasteful number, since it uses less digits than its factorization.

11105665020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16099 (or 16094 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 11105665020 in words is "eleven billion, one hundred five million, six hundred sixty-five thousand, twenty".