20005541244 has 96 divisors (see below), whose sum is σ = 56350674240. Its totient is φ = 6101028864.

The previous prime is 20005541207. The next prime is 20005541249. The reversal of 20005541244 is 44214550002.

20005541244 is a `hidden beast` number, since 200 + 0 + 5 + 5 + 412 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005541249) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 95604 + ... + 221700.

It is an arithmetic number, because the mean of its divisors is an integer number (586986190).

Almost surely, 2^20005541244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20005541244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28175337120).

20005541244 is an abundant number, since it is smaller than the sum of its proper divisors (36345132996).

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

20005541244 is a wasteful number, since it uses less digits than its factorization.

20005541244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126236 (or 126228 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 20005541244 in words is "twenty billion, five million, five hundred forty-one thousand, two hundred forty-four".