20446602020420 has 96 divisors (see below), whose sum is σ = 45072035124480. Its totient is φ = 7776487065600.

The previous prime is 20446602020387. The next prime is 20446602020513. The reversal of 20446602020420 is 2402020664402.

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, 64256471 + ... + 64573889.

It is an arithmetic number, because the mean of its divisors is an integer number (469500365880).

Almost surely, 2^{20446602020420} is an apocalyptic number.

20446602020420 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 20446602020420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22536017562240).

20446602020420 is an abundant number, since it is smaller than the sum of its proper divisors (24625433104060).

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

20446602020420 is a wasteful number, since it uses less digits than its factorization.

20446602020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318285 (or 318283 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 20446602020420 its reverse (2402020664402), we get a palindrome (22848622684822).

The spelling of 20446602020420 in words is "twenty trillion, four hundred forty-six billion, six hundred two million, twenty thousand, four hundred twenty".