20111134413 has 4 divisors (see below), whose sum is σ = 26814845888. Its totient is φ = 13407422940.

The previous prime is 20111134411. The next prime is 20111134447. The reversal of 20111134413 is 31443111102.

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 20111134413 - 2¹ = 20111134411 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 20111134413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111134411) 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, 3351855733 + ... + 3351855738.

It is an arithmetic number, because the mean of its divisors is an integer number (6703711472).

Almost surely, 2^20111134413 is an apocalyptic number.

It is an amenable number.

20111134413 is a deficient number, since it is larger than the sum of its proper divisors (6703711475).

20111134413 is an equidigital number, since it uses as much as digits as its factorization.

20111134413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703711474.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20111134413 its reverse (31443111102), we get a palindrome (51554245515).

The spelling of 20111134413 in words is "twenty billion, one hundred eleven million, one hundred thirty-four thousand, four hundred thirteen".