20050505313 has 32 divisors (see below), whose sum is σ = 29620308096. Its totient is φ = 12009673728.

The previous prime is 20050505297. The next prime is 20050505317. The reversal of 20050505313 is 31350505002.

It is not a de Polignac number, because 20050505313 - 2⁴ = 20050505297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20050505317) 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 31 ways as a sum of consecutive naturals, for example, 231 + ... + 200252.

It is an arithmetic number, because the mean of its divisors is an integer number (925634628).

Almost surely, 2^20050505313 is an apocalyptic number.

It is an amenable number.

20050505313 is a deficient number, since it is larger than the sum of its proper divisors (9569802783).

20050505313 is a wasteful number, since it uses less digits than its factorization.

20050505313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200593.

The product of its (nonzero) digits is 2250, while the sum is 24.

The spelling of 20050505313 in words is "twenty billion, fifty million, five hundred five thousand, three hundred thirteen".