2013444021023 has 4 divisors (see below), whose sum is σ = 2013770196648. Its totient is φ = 2013117845400.

The previous prime is 2013444021011. The next prime is 2013444021073. The reversal of 2013444021023 is 3201204443102.

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 2013444021023 - 2²⁰ = 2013442972447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013444020983 and 2013444021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013444021073) 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, 163078553 + ... + 163090898.

It is an arithmetic number, because the mean of its divisors is an integer number (503442549162).

Almost surely, 2^{2013444021023} is an apocalyptic number.

2013444021023 is a deficient number, since it is larger than the sum of its proper divisors (326175625).

2013444021023 is an equidigital number, since it uses as much as digits as its factorization.

2013444021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326175624.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 2013444021023 its reverse (3201204443102), we get a palindrome (5214648464125).

The spelling of 2013444021023 in words is "two trillion, thirteen billion, four hundred forty-four million, twenty-one thousand, twenty-three".