20424503111 has 4 divisors (see below), whose sum is σ = 20653992000. Its totient is φ = 20195014224.

The previous prime is 20424503107. The next prime is 20424503129. The reversal of 20424503111 is 11130542402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20424503111 - 2² = 20424503107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424503101) 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 3 ways as a sum of consecutive naturals, for example, 114744311 + ... + 114744488.

It is an arithmetic number, because the mean of its divisors is an integer number (5163498000).

Almost surely, 2^20424503111 is an apocalyptic number.

20424503111 is a deficient number, since it is larger than the sum of its proper divisors (229488889).

20424503111 is an equidigital number, since it uses as much as digits as its factorization.

20424503111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229488888.

The product of its (nonzero) digits is 960, while the sum is 23.

The spelling of 20424503111 in words is "twenty billion, four hundred twenty-four million, five hundred three thousand, one hundred eleven".