20420104044 has 48 divisors (see below), whose sum is σ = 48581328096. Its totient is φ = 6673920000.

The previous prime is 20420104043. The next prime is 20420104057. The reversal of 20420104044 is 44040102402.

It is a self number, because there is not a number n which added to its sum of digits gives 20420104044.

It is not an unprimeable number, because it can be changed into a prime (20420104043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188044 + ... + 276044.

It is an arithmetic number, because the mean of its divisors is an integer number (1012111002).

Almost surely, 2^20420104044 is an apocalyptic number.

It is an amenable number.

20420104044 is an abundant number, since it is smaller than the sum of its proper divisors (28161224052).

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

20420104044 is a wasteful number, since it uses less digits than its factorization.

20420104044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88386 (or 88384 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20420104044 its reverse (44040102402), we get a palindrome (64460206446).

The spelling of 20420104044 in words is "twenty billion, four hundred twenty million, one hundred four thousand, forty-four".