20442340044 has 72 divisors (see below), whose sum is σ = 60960693248. Its totient is φ = 5652257760.

The previous prime is 20442340031. The next prime is 20442340099. The reversal of 20442340044 is 44004324402.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 1300582 + ... + 1316205.

Almost surely, 2^20442340044 is an apocalyptic number.

It is an amenable number.

20442340044 is an abundant number, since it is smaller than the sum of its proper divisors (40518353204).

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

20442340044 is a wasteful number, since it uses less digits than its factorization.

20442340044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616835 (or 2616830 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20442340044 its reverse (44004324402), we get a palindrome (64446664446).

The spelling of 20442340044 in words is "twenty billion, four hundred forty-two million, three hundred forty thousand, forty-four".