10044400013 has 4 divisors (see below), whose sum is σ = 10081740060. Its totient is φ = 10007059968.

The previous prime is 10044399991. The next prime is 10044400039. The reversal of 10044400013 is 31000444001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1828246564 + 8216153449 = 42758^2 + 90643^2 .

It is a cyclic number.

It is not a de Polignac number, because 10044400013 - 2⁶ = 10044399949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10044399964 and 10044400000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10044400313) 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, 18669620 + ... + 18670157.

It is an arithmetic number, because the mean of its divisors is an integer number (2520435015).

Almost surely, 2^10044400013 is an apocalyptic number.

It is an amenable number.

10044400013 is a deficient number, since it is larger than the sum of its proper divisors (37340047).

10044400013 is an equidigital number, since it uses as much as digits as its factorization.

10044400013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37340046.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 10044400013 its reverse (31000444001), we get a palindrome (41044844014).

The spelling of 10044400013 in words is "ten billion, forty-four million, four hundred thousand, thirteen".