10003444000421 has 4 divisors (see below), whose sum is σ = 10003509047532. Its totient is φ = 10003378953312.

The previous prime is 10003444000411. The next prime is 10003444000439. The reversal of 10003444000421 is 12400044430001.

It is a happy number.

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 6329375430625 + 3674068569796 = 2515825^2 + 1916786^2 .

It is a cyclic number.

It is not a de Polignac number, because 10003444000421 - 2¹⁰ = 10003443999397 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 (10003444000411) 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, 32292326 + ... + 32600631.

It is an arithmetic number, because the mean of its divisors is an integer number (2500877261883).

Almost surely, 2^{10003444000421} is an apocalyptic number.

It is an amenable number.

10003444000421 is a deficient number, since it is larger than the sum of its proper divisors (65047111).

10003444000421 is an equidigital number, since it uses as much as digits as its factorization.

10003444000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65047110.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 10003444000421 its reverse (12400044430001), we get a palindrome (22403488430422).

The spelling of 10003444000421 in words is "ten trillion, three billion, four hundred forty-four million, four hundred twenty-one", and thus it is an aban number.