20554042344 has 128 divisors (see below), whose sum is σ = 58516992000. Its totient is φ = 5959641600.

The previous prime is 20554042339. The next prime is 20554042361. The reversal of 20554042344 is 44324045502.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 714267 + ... + 742485.

It is an arithmetic number, because the mean of its divisors is an integer number (457164000).

Almost surely, 2^20554042344 is an apocalyptic number.

20554042344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554042344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29258496000).

20554042344 is an abundant number, since it is smaller than the sum of its proper divisors (37962949656).

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

20554042344 is a wasteful number, since it uses less digits than its factorization.

20554042344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28359 (or 28355 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 33.

Adding to 20554042344 its reverse (44324045502), we get a palindrome (64878087846).

The spelling of 20554042344 in words is "twenty billion, five hundred fifty-four million, forty-two thousand, three hundred forty-four".