20003163365 has 16 divisors (see below), whose sum is σ = 25052198400. Its totient is φ = 15303860352.

The previous prime is 20003163329. The next prime is 20003163403. The reversal of 20003163365 is 56336130002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20003163365 - 2²⁴ = 19986386149 is a prime.

It is a super-3 number, since 3×20003163365³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742196 + ... + 768674.

It is an arithmetic number, because the mean of its divisors is an integer number (1565762400).

Almost surely, 2^20003163365 is an apocalyptic number.

It is an amenable number.

20003163365 is a deficient number, since it is larger than the sum of its proper divisors (5049035035).

20003163365 is a wasteful number, since it uses less digits than its factorization.

20003163365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33076.

The product of its (nonzero) digits is 9720, while the sum is 29.

Adding to 20003163365 its reverse (56336130002), we get a palindrome (76339293367).

The spelling of 20003163365 in words is "twenty billion, three million, one hundred sixty-three thousand, three hundred sixty-five".