20445220004010 has 128 divisors (see below), whose sum is σ = 51599804129280. Its totient is φ = 5174500531200.

The previous prime is 20445220003951. The next prime is 20445220004059. The reversal of 20445220004010 is 1040002254402.

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 63 ways as a sum of consecutive naturals, for example, 1106273970 + ... + 1106292450.

It is an arithmetic number, because the mean of its divisors is an integer number (403123469760).

Almost surely, 2^{20445220004010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20445220004010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25799902064640).

20445220004010 is an abundant number, since it is smaller than the sum of its proper divisors (31154584125270).

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

20445220004010 is a wasteful number, since it uses less digits than its factorization.

20445220004010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30884.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 20445220004010 its reverse (1040002254402), we get a palindrome (21485222258412).

The spelling of 20445220004010 in words is "twenty trillion, four hundred forty-five billion, two hundred twenty million, four thousand, ten".