20124403113 has 4 divisors (see below), whose sum is σ = 26832537488. Its totient is φ = 13416268740.

The previous prime is 20124403111. The next prime is 20124403151. The reversal of 20124403113 is 31130442102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20124403113 - 2¹ = 20124403111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20124403113.

It is not an unprimeable number, because it can be changed into a prime (20124403111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3354067183 + ... + 3354067188.

It is an arithmetic number, because the mean of its divisors is an integer number (6708134372).

Almost surely, 2^20124403113 is an apocalyptic number.

It is an amenable number.

20124403113 is a deficient number, since it is larger than the sum of its proper divisors (6708134375).

20124403113 is an equidigital number, since it uses as much as digits as its factorization.

20124403113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6708134374.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20124403113 its reverse (31130442102), we get a palindrome (51254845215).

The spelling of 20124403113 in words is "twenty billion, one hundred twenty-four million, four hundred three thousand, one hundred thirteen".