13444040001 has 16 divisors (see below), whose sum is σ = 20517170048. Its totient is φ = 7670678400.

The previous prime is 13444039993. The next prime is 13444040009. The reversal of 13444040001 is 10004044431.

It is an interprime number because it is at equal distance from previous prime (13444039993) and next prime (13444040009).

It is not a de Polignac number, because 13444040001 - 2³ = 13444039993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13444040001.

It is not an unprimeable number, because it can be changed into a prime (13444040009) 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, 470380 + ... + 498141.

It is an arithmetic number, because the mean of its divisors is an integer number (1282323128).

Almost surely, 2^13444040001 is an apocalyptic number.

It is an amenable number.

13444040001 is a deficient number, since it is larger than the sum of its proper divisors (7073130047).

13444040001 is an equidigital number, since it uses as much as digits as its factorization.

13444040001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969192.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 13444040001 its reverse (10004044431), we get a palindrome (23448084432).

The spelling of 13444040001 in words is "thirteen billion, four hundred forty-four million, forty thousand, one".