20320204102144 has 40 divisors (see below), whose sum is σ = 40668276196548. Its totient is φ = 10143196569600.

The previous prime is 20320204102141. The next prime is 20320204102277. The reversal of 20320204102144 is 44120140202302.

It can be written as a sum of positive squares in 2 ways, for example, as 18928068409600 + 1392135692544 = 4350640^2 + 1179888^2 .

It is not an unprimeable number, because it can be changed into a prime (20320204102141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32710507 + ... + 33325930.

Almost surely, 2^{20320204102144} is an apocalyptic number.

It is an amenable number.

20320204102144 is an abundant number, since it is smaller than the sum of its proper divisors (20348072094404).

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

20320204102144 is an frugal number, since it uses more digits than its factorization.

20320204102144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66037056 (or 66037040 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20320204102144 its reverse (44120140202302), we get a palindrome (64440344304446).

The spelling of 20320204102144 in words is "twenty trillion, three hundred twenty billion, two hundred four million, one hundred two thousand, one hundred forty-four".