20069744220 has 144 divisors (see below), whose sum is σ = 63314334720. Its totient is φ = 5336559936.

The previous prime is 20069744183. The next prime is 20069744231. The reversal of 20069744220 is 2244796002.

20069744220 is a `hidden beast` number, since 200 + 6 + 9 + 7 + 442 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1738989 + ... + 1750491.

It is an arithmetic number, because the mean of its divisors is an integer number (439682880).

Almost surely, 2^20069744220 is an apocalyptic number.

20069744220 is a gapful number since it is divisible by the number (20) 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 20069744220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31657167360).

20069744220 is an abundant number, since it is smaller than the sum of its proper divisors (43244590500).

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

20069744220 is a wasteful number, since it uses less digits than its factorization.

20069744220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11886 (or 11872 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 20069744220 in words is "twenty billion, sixty-nine million, seven hundred forty-four thousand, two hundred twenty".