20144121445 has 8 divisors (see below), whose sum is σ = 27626223744. Its totient is φ = 13813111824.

The previous prime is 20144121391. The next prime is 20144121449. The reversal of 20144121445 is 54412144102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20144121445 - 2¹⁹ = 20143597157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144121449) 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, 287773129 + ... + 287773198.

It is an arithmetic number, because the mean of its divisors is an integer number (3453277968).

Almost surely, 2^20144121445 is an apocalyptic number.

It is an amenable number.

20144121445 is a deficient number, since it is larger than the sum of its proper divisors (7482102299).

20144121445 is an equidigital number, since it uses as much as digits as its factorization.

20144121445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575546339.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 20144121445 its reverse (54412144102), we get a palindrome (74556265547).

The spelling of 20144121445 in words is "twenty billion, one hundred forty-four million, one hundred twenty-one thousand, four hundred forty-five".