20420330000000 has 512 divisors, whose sum is σ = 58598849986560. Its totient is φ = 6943104000000.

The previous prime is 20420329999973. The next prime is 20420330000023. The reversal of 20420330000000 is 3302402.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a self number, because there is not a number n which added to its sum of digits gives 20420330000000.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8889998852 + ... + 8890001148.

It is an arithmetic number, because the mean of its divisors is an integer number (114450878880).

Almost surely, 2^{20420330000000} is an apocalyptic number.

20420330000000 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 20420330000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29299424993280).

20420330000000 is an abundant number, since it is smaller than the sum of its proper divisors (38178519986560).

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

20420330000000 is an frugal number, since it uses more digits than its factorization.

20420330000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

Adding to 20420330000000 its reverse (3302402), we get a palindrome (20420333302402).

The spelling of 20420330000000 in words is "twenty trillion, four hundred twenty billion, three hundred thirty million", and thus it is an aban number.