20144402123 has 2 divisors, whose sum is σ = 20144402124. Its totient is φ = 20144402122.

The previous prime is 20144402111. The next prime is 20144402141. The reversal of 20144402123 is 32120444102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20144402123 - 2⁸ = 20144401867 is a prime.

It is not a weakly prime, because it can be changed into another prime (20144402183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072201061 + 10072201062.

It is an arithmetic number, because the mean of its divisors is an integer number (10072201062).

Almost surely, 2^20144402123 is an apocalyptic number.

20144402123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20144402123 is an equidigital number, since it uses as much as digits as its factorization.

20144402123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20144402123 its reverse (32120444102), we get a palindrome (52264846225).

The spelling of 20144402123 in words is "twenty billion, one hundred forty-four million, four hundred two thousand, one hundred twenty-three".