20173273423 has 2 divisors, whose sum is σ = 20173273424. Its totient is φ = 20173273422.

The previous prime is 20173273331. The next prime is 20173273433. The reversal of 20173273423 is 32437237102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20173273423 - 2²¹ = 20171176271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20173273433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10086636711 + 10086636712.

It is an arithmetic number, because the mean of its divisors is an integer number (10086636712).

Almost surely, 2^20173273423 is an apocalyptic number.

20173273423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20173273423 is an equidigital number, since it uses as much as digits as its factorization.

20173273423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 34.

The spelling of 20173273423 in words is "twenty billion, one hundred seventy-three million, two hundred seventy-three thousand, four hundred twenty-three".