20144442012 has 12 divisors (see below), whose sum is σ = 47003698056. Its totient is φ = 6714814000.

The previous prime is 20144442007. The next prime is 20144442013. The reversal of 20144442012 is 21024444102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144442013) 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, 839351739 + ... + 839351762.

It is an arithmetic number, because the mean of its divisors is an integer number (3916974838).

Almost surely, 2^20144442012 is an apocalyptic number.

It is an amenable number.

20144442012 is an abundant number, since it is smaller than the sum of its proper divisors (26859256044).

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

20144442012 is a wasteful number, since it uses less digits than its factorization.

20144442012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678703508 (or 1678703506 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 20144442012 its reverse (21024444102), we get a palindrome (41168886114).

The spelling of 20144442012 in words is "twenty billion, one hundred forty-four million, four hundred forty-two thousand, twelve".