2040644400203 has 4 divisors (see below), whose sum is σ = 2040823903560. Its totient is φ = 2040464896848.

The previous prime is 2040644400191. The next prime is 2040644400211. The reversal of 2040644400203 is 3020044460402.

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 2040644400203 - 2¹⁰ = 2040644399179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040644400503) 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, 89734625 + ... + 89757362.

It is an arithmetic number, because the mean of its divisors is an integer number (510205975890).

Almost surely, 2^{2040644400203} is an apocalyptic number.

2040644400203 is a deficient number, since it is larger than the sum of its proper divisors (179503357).

2040644400203 is a wasteful number, since it uses less digits than its factorization.

2040644400203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179503356.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 2040644400203 its reverse (3020044460402), we get a palindrome (5060688860605).

The spelling of 2040644400203 in words is "two trillion, forty billion, six hundred forty-four million, four hundred thousand, two hundred three".