20003343063145 has 24 divisors (see below), whose sum is σ = 26086345764696. Its totient is φ = 14718371885568.

The previous prime is 20003343063133. The next prime is 20003343063181. The reversal of 20003343063145 is 54136034330002.

It can be written as a sum of positive squares in 12 ways, for example, as 19460591125056 + 542751938089 = 4411416^2 + 736717^2 .

It is not a de Polignac number, because 20003343063145 - 2¹³ = 20003343054953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20003343063145.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 42496252 + ... + 42964381.

It is an arithmetic number, because the mean of its divisors is an integer number (1086931073529).

Almost surely, 2^{20003343063145} is an apocalyptic number.

It is an amenable number.

20003343063145 is a deficient number, since it is larger than the sum of its proper divisors (6083002701551).

20003343063145 is a wasteful number, since it uses less digits than its factorization.

20003343063145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85460941 (or 85460928 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 34.

Adding to 20003343063145 its reverse (54136034330002), we get a palindrome (74139377393147).

The spelling of 20003343063145 in words is "twenty trillion, three billion, three hundred forty-three million, sixty-three thousand, one hundred forty-five".