20445442004323 has 4 divisors (see below), whose sum is σ = 23366219433520. Its totient is φ = 17524664575128.

The previous prime is 20445442004291. The next prime is 20445442004329. The reversal of 20445442004323 is 32340024454402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20445442004323 - 2⁵ = 20445442004291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20445442004329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460388714588 + ... + 1460388714601.

It is an arithmetic number, because the mean of its divisors is an integer number (5841554858380).

Almost surely, 2^{20445442004323} is an apocalyptic number.

20445442004323 is a deficient number, since it is larger than the sum of its proper divisors (2920777429197).

20445442004323 is an equidigital number, since it uses as much as digits as its factorization.

20445442004323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920777429196.

The product of its (nonzero) digits is 368640, while the sum is 37.

Adding to 20445442004323 its reverse (32340024454402), we get a palindrome (52785466458725).

The spelling of 20445442004323 in words is "twenty trillion, four hundred forty-five billion, four hundred forty-two million, four thousand, three hundred twenty-three".