20402143000144 has 20 divisors (see below), whose sum is σ = 41854396302324. Its totient is φ = 9601008470528.

The previous prime is 20402143000123. The next prime is 20402143000163. The reversal of 20402143000144 is 44100034120402.

It can be written as a sum of positive squares in 2 ways, for example, as 16615569488400 + 3786573511744 = 4076220^2 + 1945912^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37503939067 + ... + 37503939610.

Almost surely, 2^{20402143000144} is an apocalyptic number.

It is an amenable number.

20402143000144 is an abundant number, since it is smaller than the sum of its proper divisors (21452253302180).

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

20402143000144 is a wasteful number, since it uses less digits than its factorization.

20402143000144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75007878702 (or 75007878696 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20402143000144 its reverse (44100034120402), we get a palindrome (64502177120546).

The spelling of 20402143000144 in words is "twenty trillion, four hundred two billion, one hundred forty-three million, one hundred forty-four", and thus it is an aban number.