11536553220 has 48 divisors (see below), whose sum is σ = 33416228160. Its totient is φ = 2970330496.

The previous prime is 11536553207. The next prime is 11536553239. The reversal of 11536553220 is 2235563511.

It is a happy 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, 3313362 + ... + 3316841.

It is an arithmetic number, because the mean of its divisors is an integer number (696171420).

Almost surely, 2^11536553220 is an apocalyptic number.

11536553220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11536553220 is an abundant number, since it is smaller than the sum of its proper divisors (21879674940).

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

11536553220 is a wasteful number, since it uses less digits than its factorization.

11536553220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630244 (or 6630242 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 11536553220 in words is "eleven billion, five hundred thirty-six million, five hundred fifty-three thousand, two hundred twenty".