4444400320013 has 4 divisors (see below), whose sum is σ = 4444405079808. Its totient is φ = 4444395560220.

The previous prime is 4444400320007. The next prime is 4444400320027. The reversal of 4444400320013 is 3100230044444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4444400320013 - 2¹⁶ = 4444400254477 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 (4444400320093) 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, 466523 + ... + 3017688.

It is an arithmetic number, because the mean of its divisors is an integer number (1111101269952).

Almost surely, 2^{4444400320013} is an apocalyptic number.

It is an amenable number.

4444400320013 is a deficient number, since it is larger than the sum of its proper divisors (4759795).

4444400320013 is a wasteful number, since it uses less digits than its factorization.

4444400320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759794.

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

Adding to 4444400320013 its reverse (3100230044444), we get a palindrome (7544630364457).

The spelling of 4444400320013 in words is "four trillion, four hundred forty-four billion, four hundred million, three hundred twenty thousand, thirteen".