1044605225821 has 4 divisors (see below), whose sum is σ = 1062310399200. Its totient is φ = 1026900052444.

The previous prime is 1044605225773. The next prime is 1044605225837. The reversal of 1044605225821 is 1285225064401.

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.

It is a cyclic number.

It is not a de Polignac number, because 1044605225821 - 2¹⁷ = 1044605094749 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 (1044605225861) 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, 8852586601 + ... + 8852586718.

It is an arithmetic number, because the mean of its divisors is an integer number (265577599800).

Almost surely, 2^{1044605225821} is an apocalyptic number.

It is an amenable number.

1044605225821 is a deficient number, since it is larger than the sum of its proper divisors (17705173379).

1044605225821 is an equidigital number, since it uses as much as digits as its factorization.

1044605225821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17705173378.

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 1044605225821 in words is "one trillion, forty-four billion, six hundred five million, two hundred twenty-five thousand, eight hundred twenty-one".