20003513165313 has 32 divisors (see below), whose sum is σ = 27413457843072. Its totient is φ = 12970090828800.

The previous prime is 20003513165303. The next prime is 20003513165393. The reversal of 20003513165313 is 31356131530002.

It is a happy number.

It is not a de Polignac number, because 20003513165313 - 2¹² = 20003513161217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20003513165303) 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, 7557006 + ... + 9854712.

It is an arithmetic number, because the mean of its divisors is an integer number (856670557596).

Almost surely, 2^{20003513165313} is an apocalyptic number.

It is an amenable number.

20003513165313 is a deficient number, since it is larger than the sum of its proper divisors (7409944677759).

20003513165313 is a wasteful number, since it uses less digits than its factorization.

20003513165313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298305.

The product of its (nonzero) digits is 24300, while the sum is 33.

Adding to 20003513165313 its reverse (31356131530002), we get a palindrome (51359644695315).

The spelling of 20003513165313 in words is "twenty trillion, three billion, five hundred thirteen million, one hundred sixty-five thousand, three hundred thirteen".