20373505189 has 4 divisors (see below), whose sum is σ = 20677587424. Its totient is φ = 20069422956.

The previous prime is 20373505183. The next prime is 20373505199. The reversal of 20373505189 is 98150537302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20373505189 - 2⁵ = 20373505157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20373505183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152041017 + ... + 152041150.

It is an arithmetic number, because the mean of its divisors is an integer number (5169396856).

Almost surely, 2^20373505189 is an apocalyptic number.

It is an amenable number.

20373505189 is a deficient number, since it is larger than the sum of its proper divisors (304082235).

20373505189 is an equidigital number, since it uses as much as digits as its factorization.

20373505189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304082234.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 20373505189 in words is "twenty billion, three hundred seventy-three million, five hundred five thousand, one hundred eighty-nine".