20144433111 has 8 divisors (see below), whose sum is σ = 29300993664. Its totient is φ = 12208747320.

The previous prime is 20144433107. The next prime is 20144433139. The reversal of 20144433111 is 11133444102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20144433111 - 2² = 20144433107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144433151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305218651 + ... + 305218716.

It is an arithmetic number, because the mean of its divisors is an integer number (3662624208).

Almost surely, 2^20144433111 is an apocalyptic number.

20144433111 is a deficient number, since it is larger than the sum of its proper divisors (9156560553).

20144433111 is a wasteful number, since it uses less digits than its factorization.

20144433111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610437381.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 20144433111 its reverse (11133444102), we get a palindrome (31277877213).

The spelling of 20144433111 in words is "twenty billion, one hundred forty-four million, four hundred thirty-three thousand, one hundred eleven".