11169645220 has 24 divisors (see below), whose sum is σ = 24265092600. Its totient is φ = 4313793792.

The previous prime is 11169645203. The next prime is 11169645259. The reversal of 11169645220 is 2254696111.

It can be written as a sum of positive squares in 4 ways, for example, as 8145316 + 11161499904 = 2854^2 + 105648^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11169645220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9628425 + ... + 9629584.

It is an arithmetic number, because the mean of its divisors is an integer number (1011045525).

Almost surely, 2^11169645220 is an apocalyptic number.

11169645220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11169645220 is an abundant number, since it is smaller than the sum of its proper divisors (13095447380).

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

11169645220 is a wasteful number, since it uses less digits than its factorization.

11169645220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19258047 (or 19258045 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 11169645220 in words is "eleven billion, one hundred sixty-nine million, six hundred forty-five thousand, two hundred twenty".