20144424433 has 16 divisors (see below), whose sum is σ = 23779517440. Its totient is φ = 16699348800.

The previous prime is 20144424389. The next prime is 20144424437. The reversal of 20144424433 is 33442444102.

It is a cyclic number.

It is not a de Polignac number, because 20144424433 - 2²¹ = 20142327281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 20144424395 and 20144424404.

It is not an unprimeable number, because it can be changed into a prime (20144424437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334363 + ... + 389983.

It is an arithmetic number, because the mean of its divisors is an integer number (1486219840).

Almost surely, 2^20144424433 is an apocalyptic number.

It is an amenable number.

20144424433 is a deficient number, since it is larger than the sum of its proper divisors (3635093007).

20144424433 is a wasteful number, since it uses less digits than its factorization.

20144424433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57328.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 20144424433 its reverse (33442444102), we get a palindrome (53586868535).

The spelling of 20144424433 in words is "twenty billion, one hundred forty-four million, four hundred twenty-four thousand, four hundred thirty-three".