20212004544 has 28 divisors (see below), whose sum is σ = 53477595864. Its totient is φ = 6737334784.

The previous prime is 20212004543. The next prime is 20212004551. The reversal of 20212004544 is 44540021202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20212004543) 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 3 ways as a sum of consecutive naturals, for example, 52635237 + ... + 52635620.

It is an arithmetic number, because the mean of its divisors is an integer number (1909914138).

Almost surely, 2^20212004544 is an apocalyptic number.

20212004544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20212004544 is an abundant number, since it is smaller than the sum of its proper divisors (33265591320).

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

20212004544 is a wasteful number, since it uses less digits than its factorization.

20212004544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105270872 (or 105270862 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 20212004544 its reverse (44540021202), we get a palindrome (64752025746).

The spelling of 20212004544 in words is "twenty billion, two hundred twelve million, four thousand, five hundred forty-four".