20445201440000 has 180 divisors, whose sum is σ = 51386190905280. Its totient is φ = 8115644160000.

The previous prime is 20445201439991. The next prime is 20445201440011. The reversal of 20445201440000 is 4410254402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20472281 + ... + 21447719.

Almost surely, 2^{20445201440000} is an apocalyptic number.

20445201440000 is a gapful number since it is divisible by the number (20) 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 20445201440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25693095452640).

20445201440000 is an abundant number, since it is smaller than the sum of its proper divisors (30940989465280).

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

20445201440000 is an frugal number, since it uses more digits than its factorization.

20445201440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975606 (or 975577 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 20445201440000 its reverse (4410254402), we get a palindrome (20449611694402).

The spelling of 20445201440000 in words is "twenty trillion, four hundred forty-five billion, two hundred one million, four hundred forty thousand".