20144254402432 has 128 divisors (see below), whose sum is σ = 41559102604800. Its totient is φ = 9720607303680.

The previous prime is 20144254402429. The next prime is 20144254402501. The reversal of 20144254402432 is 23420445244102.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 20144254402391 and 20144254402400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211402863 + ... + 211498129.

It is an arithmetic number, because the mean of its divisors is an integer number (324680489100).

Almost surely, 2^{20144254402432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20144254402432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20779551302400).

20144254402432 is an abundant number, since it is smaller than the sum of its proper divisors (21414848202368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20144254402432 is an equidigital number, since it uses as much as digits as its factorization.

20144254402432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95844 (or 95832 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 37.

Adding to 20144254402432 its reverse (23420445244102), we get a palindrome (43564699646534).

The spelling of 20144254402432 in words is "twenty trillion, one hundred forty-four billion, two hundred fifty-four million, four hundred two thousand, four hundred thirty-two".