20144202422144 has 32 divisors (see below), whose sum is σ = 40287180189600. Its totient is φ = 10032910139392.

The previous prime is 20144202422119. The next prime is 20144202422159. The reversal of 20144202422144 is 44122420244102.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 20144202422144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306147224 + ... + 306213015.

It is an arithmetic number, because the mean of its divisors is an integer number (1258974380925).

Almost surely, 2^{20144202422144} is an apocalyptic number.

It is an amenable number.

20144202422144 is a deficient number, since it is larger than the sum of its proper divisors (20142977767456).

20144202422144 is an equidigital number, since it uses as much as digits as its factorization.

20144202422144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612360510 (or 612360498 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 20144202422144 its reverse (44122420244102), we get a palindrome (64266622666246).

The spelling of 20144202422144 in words is "twenty trillion, one hundred forty-four billion, two hundred two million, four hundred twenty-two thousand, one hundred forty-four".