20042323601 has 4 divisors (see below), whose sum is σ = 20531160804. Its totient is φ = 19553486400.

The previous prime is 20042323591. The next prime is 20042323619. The reversal of 20042323601 is 10632324002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11288850001 + 8753473600 = 106249^2 + 93560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20042323601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20042323201) 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, 244418540 + ... + 244418621.

It is an arithmetic number, because the mean of its divisors is an integer number (5132790201).

Almost surely, 2^20042323601 is an apocalyptic number.

It is an amenable number.

20042323601 is a deficient number, since it is larger than the sum of its proper divisors (488837203).

20042323601 is an equidigital number, since it uses as much as digits as its factorization.

20042323601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488837202.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20042323601 its reverse (10632324002), we get a palindrome (30674647603).

The spelling of 20042323601 in words is "twenty billion, forty-two million, three hundred twenty-three thousand, six hundred one".