20152144173 has 32 divisors (see below), whose sum is σ = 32350371840. Its totient is φ = 10900612800.

The previous prime is 20152144141. The next prime is 20152144189. The reversal of 20152144173 is 37144125102.

It is not a de Polignac number, because 20152144173 - 2⁵ = 20152144141 is a prime.

It is a super-2 number, since 2×20152144173² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20152144173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152144123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489748 + ... + 529298.

It is an arithmetic number, because the mean of its divisors is an integer number (1010949120).

Almost surely, 2^20152144173 is an apocalyptic number.

It is an amenable number.

20152144173 is a deficient number, since it is larger than the sum of its proper divisors (12198227667).

20152144173 is a wasteful number, since it uses less digits than its factorization.

20152144173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40857.

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 20152144173 its reverse (37144125102), we get a palindrome (57296269275).

The spelling of 20152144173 in words is "twenty billion, one hundred fifty-two million, one hundred forty-four thousand, one hundred seventy-three".