20003507045305 has 16 divisors (see below), whose sum is σ = 27883108652544. Its totient is φ = 13491826764480.

The previous prime is 20003507045281. The next prime is 20003507045321. The reversal of 20003507045305 is 50354070530002.

It is not a de Polignac number, because 20003507045305 - 2¹¹ = 20003507043257 is a prime.

It is a super-2 number, since 2×20003507045305² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4684659937 + ... + 4684664206.

It is an arithmetic number, because the mean of its divisors is an integer number (1742694290784).

Almost surely, 2^{20003507045305} is an apocalyptic number.

It is an amenable number.

20003507045305 is a deficient number, since it is larger than the sum of its proper divisors (7879601607239).

20003507045305 is an equidigital number, since it uses as much as digits as its factorization.

20003507045305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369324216.

The product of its (nonzero) digits is 63000, while the sum is 34.

Adding to 20003507045305 its reverse (50354070530002), we get a palindrome (70357577575307).

The spelling of 20003507045305 in words is "twenty trillion, three billion, five hundred seven million, forty-five thousand, three hundred five".