1020320320020 has 96 divisors (see below), whose sum is σ = 2868528152448. Its totient is φ = 270979917312.

The previous prime is 1020320319947. The next prime is 1020320320027. The reversal of 1020320320020 is 200230230201.

1020320320020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 (1020320320027) 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, 14770602 + ... + 14839518.

It is an arithmetic number, because the mean of its divisors is an integer number (29880501588).

Almost surely, 2^{1020320320020} is an apocalyptic number.

1020320320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020320320020 is an abundant number, since it is smaller than the sum of its proper divisors (1848207832428).

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

1020320320020 is a wasteful number, since it uses less digits than its factorization.

1020320320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69929 (or 69927 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 1020320320020 its reverse (200230230201), we get a palindrome (1220550550221).

The spelling of 1020320320020 in words is "one trillion, twenty billion, three hundred twenty million, three hundred twenty thousand, twenty".