2003421636023 has 4 divisors (see below), whose sum is σ = 2003501865240. Its totient is φ = 2003341406808.

The previous prime is 2003421635987. The next prime is 2003421636043. The reversal of 2003421636023 is 3206361243002.

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 2003421636023 - 2³² = 1999126668727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003421636043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40077140 + ... + 40127097.

It is an arithmetic number, because the mean of its divisors is an integer number (500875466310).

Almost surely, 2^{2003421636023} is an apocalyptic number.

2003421636023 is a deficient number, since it is larger than the sum of its proper divisors (80229217).

2003421636023 is an equidigital number, since it uses as much as digits as its factorization.

2003421636023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80229216.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 2003421636023 its reverse (3206361243002), we get a palindrome (5209782879025).

The spelling of 2003421636023 in words is "two trillion, three billion, four hundred twenty-one million, six hundred thirty-six thousand, twenty-three".