20413433111 has 4 divisors (see below), whose sum is σ = 21614223312. Its totient is φ = 19212642912.

The previous prime is 20413433063. The next prime is 20413433141. The reversal of 20413433111 is 11133431402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11133431402 = 2 ⋅5566715701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20413433111 is a prime.

It is a super-2 number, since 2×20413433111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413433141) 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, 600395075 + ... + 600395108.

It is an arithmetic number, because the mean of its divisors is an integer number (5403555828).

Almost surely, 2^20413433111 is an apocalyptic number.

20413433111 is a deficient number, since it is larger than the sum of its proper divisors (1200790201).

20413433111 is a wasteful number, since it uses less digits than its factorization.

20413433111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200790200.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20413433111 its reverse (11133431402), we get a palindrome (31546864513).

The spelling of 20413433111 in words is "twenty billion, four hundred thirteen million, four hundred thirty-three thousand, one hundred eleven".