20442419988 has 48 divisors (see below), whose sum is σ = 48824455680. Its totient is φ = 6653463264.

The previous prime is 20442419953. The next prime is 20442420041. The reversal of 20442419988 is 88991424402.

It is a self number, because there is not a number n which added to its sum of digits gives 20442419988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2410131 + ... + 2418597.

It is an arithmetic number, because the mean of its divisors is an integer number (1017176160).

Almost surely, 2^20442419988 is an apocalyptic number.

It is an amenable number.

20442419988 is an abundant number, since it is smaller than the sum of its proper divisors (28382035692).

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

20442419988 is a wasteful number, since it uses less digits than its factorization.

20442419988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13196 (or 13194 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 20442419988 in words is "twenty billion, four hundred forty-two million, four hundred nineteen thousand, nine hundred eighty-eight".