20323775005 has 4 divisors (see below), whose sum is σ = 24388530012. Its totient is φ = 16259020000.

The previous prime is 20323774967. The next prime is 20323775053. The reversal of 20323775005 is 50057732302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50057732302 = 2 ⋅25028866151.

It can be written as a sum of positive squares in 2 ways, for example, as 14934306436 + 5389468569 = 122206^2 + 73413^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20323775005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2032377496 + ... + 2032377505.

It is an arithmetic number, because the mean of its divisors is an integer number (6097132503).

Almost surely, 2^20323775005 is an apocalyptic number.

It is an amenable number.

20323775005 is a deficient number, since it is larger than the sum of its proper divisors (4064755007).

20323775005 is an equidigital number, since it uses as much as digits as its factorization.

20323775005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064755006.

The product of its (nonzero) digits is 44100, while the sum is 34.

The spelling of 20323775005 in words is "twenty billion, three hundred twenty-three million, seven hundred seventy-five thousand, five".