20011013320020 has 96 divisors (see below), whose sum is σ = 56654831493120. Its totient is φ = 5277159158400.

The previous prime is 20011013319971. The next prime is 20011013320027. The reversal of 20011013320020 is 2002331011002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011013320027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2931910 + ... + 6972669.

It is an arithmetic number, because the mean of its divisors is an integer number (590154494720).

Almost surely, 2^{20011013320020} is an apocalyptic number.

20011013320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011013320020 is an abundant number, since it is smaller than the sum of its proper divisors (36643818173100).

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

20011013320020 is a wasteful number, since it uses less digits than its factorization.

20011013320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904965 (or 9904963 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20011013320020 its reverse (2002331011002), we get a palindrome (22013344331022).

The spelling of 20011013320020 in words is "twenty trillion, eleven billion, thirteen million, three hundred twenty thousand, twenty".