20503224511 has 16 divisors (see below), whose sum is σ = 26253342720. Its totient is φ = 15544738080.

The previous prime is 20503224503. The next prime is 20503224563. The reversal of 20503224511 is 11542230502.

It is a cyclic number.

It is not a de Polignac number, because 20503224511 - 2³ = 20503224503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503824511) 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 15 ways as a sum of consecutive naturals, for example, 3595471 + ... + 3601168.

It is an arithmetic number, because the mean of its divisors is an integer number (1640833920).

Almost surely, 2^20503224511 is an apocalyptic number.

20503224511 is a deficient number, since it is larger than the sum of its proper divisors (5750118209).

20503224511 is a wasteful number, since it uses less digits than its factorization.

20503224511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196694.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 20503224511 in words is "twenty billion, five hundred three million, two hundred twenty-four thousand, five hundred eleven".