20100332320020 has 36 divisors (see below), whose sum is σ = 60971008037940. Its totient is φ = 5360088618624.

The previous prime is 20100332320007. The next prime is 20100332320027. The reversal of 20100332320020 is 2002323300102.

It is a happy number.

20100332320020 is a `hidden beast` number, since 2 + 0 + 10 + 0 + 332 + 320 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4731642954756 + 15368689365264 = 2175234^2 + 3920292^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20100332319975 and 20100332320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100332320027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55834256265 + ... + 55834256624.

It is an arithmetic number, because the mean of its divisors is an integer number (1693639112165).

Almost surely, 2^{20100332320020} is an apocalyptic number.

20100332320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100332320020 is an abundant number, since it is smaller than the sum of its proper divisors (40870675717920).

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

20100332320020 is a wasteful number, since it uses less digits than its factorization.

20100332320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111668512904 (or 111668512899 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20100332320020 its reverse (2002323300102), we get a palindrome (22102655620122).

The spelling of 20100332320020 in words is "twenty trillion, one hundred billion, three hundred thirty-two million, three hundred twenty thousand, twenty".