20144230173 has 8 divisors (see below), whose sum is σ = 29843304000. Its totient is φ = 13429486764.

The previous prime is 20144230163. The next prime is 20144230181. The reversal of 20144230173 is 37103244102.

It is a happy number.

20144230173 is a `hidden beast` number, since 20 + 1 + 442 + 30 + 173 = 666.

It is not a de Polignac number, because 20144230173 - 2⁴ = 20144230157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 746082599 = 20144230173 / (2 + 0 + 1 + 4 + 4 + 2 + 3 + 0 + 1 + 7 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144230163) 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, 373041273 + ... + 373041326.

It is an arithmetic number, because the mean of its divisors is an integer number (3730413000).

Almost surely, 2^20144230173 is an apocalyptic number.

It is an amenable number.

20144230173 is a deficient number, since it is larger than the sum of its proper divisors (9699073827).

20144230173 is an equidigital number, since it uses as much as digits as its factorization.

20144230173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746082608 (or 746082602 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 20144230173 its reverse (37103244102), we get a palindrome (57247474275).

The spelling of 20144230173 in words is "twenty billion, one hundred forty-four million, two hundred thirty thousand, one hundred seventy-three".