20413111111 has 32 divisors (see below), whose sum is σ = 22419763200. Its totient is φ = 18522028800.

The previous prime is 20413111099. The next prime is 20413111123. The reversal of 20413111111 is 11111131402.

It is an interprime number because it is at equal distance from previous prime (20413111099) and next prime (20413111123).

It is a cyclic number.

It is not a de Polignac number, because 20413111111 - 2⁷ = 20413110983 is a prime.

It is a Duffinian number.

20413111111 is a modest number, since divided by 111111 gives 20413 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413111151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8025906 + ... + 8028448.

It is an arithmetic number, because the mean of its divisors is an integer number (700617600).

Almost surely, 2^20413111111 is an apocalyptic number.

20413111111 is a deficient number, since it is larger than the sum of its proper divisors (2006652089).

20413111111 is a wasteful number, since it uses less digits than its factorization.

20413111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 20413111111 its reverse (11111131402), we get a palindrome (31524242513).

The spelling of 20413111111 in words is "twenty billion, four hundred thirteen million, one hundred eleven thousand, one hundred eleven".