20132405173 has 2 divisors, whose sum is σ = 20132405174. Its totient is φ = 20132405172.

The previous prime is 20132405089. The next prime is 20132405219. The reversal of 20132405173 is 37150423102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19364948964 + 767456209 = 139158^2 + 27703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132405173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20132205173) by changing a digit.

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 as a sum of consecutive naturals, namely, 10066202586 + 10066202587.

It is an arithmetic number, because the mean of its divisors is an integer number (10066202587).

Almost surely, 2^20132405173 is an apocalyptic number.

It is an amenable number.

20132405173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20132405173 is an equidigital number, since it uses as much as digits as its factorization.

20132405173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 20132405173 its reverse (37150423102), we get a palindrome (57282828275).

The spelling of 20132405173 in words is "twenty billion, one hundred thirty-two million, four hundred five thousand, one hundred seventy-three".