13569944220 has 144 divisors (see below), whose sum is σ = 47121896640. Its totient is φ = 3096465408.

The previous prime is 13569944207. The next prime is 13569944261. The reversal of 13569944220 is 2244996531.

13569944220 is a `hidden beast` number, since 135 + 6 + 9 + 94 + 422 + 0 = 666.

13569944220 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 2×13569944220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 763596 + ... + 781164.

Almost surely, 2^13569944220 is an apocalyptic number.

13569944220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13569944220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23560948320).

13569944220 is an abundant number, since it is smaller than the sum of its proper divisors (33551952420).

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

13569944220 is a wasteful number, since it uses less digits than its factorization.

13569944220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18204 (or 18199 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 13569944220 in words is "thirteen billion, five hundred sixty-nine million, nine hundred forty-four thousand, two hundred twenty".