20340444200203 has 16 divisors (see below), whose sum is σ = 21634215886080. Its totient is φ = 19057486381056.

The previous prime is 20340444200171. The next prime is 20340444200257. The reversal of 20340444200203 is 30200244404302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20340444200203 - 2⁵ = 20340444200171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20340444200903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153761293 + ... + 153893521.

It is an arithmetic number, because the mean of its divisors is an integer number (1352138492880).

Almost surely, 2^{20340444200203} is an apocalyptic number.

20340444200203 is a deficient number, since it is larger than the sum of its proper divisors (1293771685877).

20340444200203 is a wasteful number, since it uses less digits than its factorization.

20340444200203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173046.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20340444200203 its reverse (30200244404302), we get a palindrome (50540688604505).

The spelling of 20340444200203 in words is "twenty trillion, three hundred forty billion, four hundred forty-four million, two hundred thousand, two hundred three".