1604443422443 has 4 divisors (see below), whose sum is σ = 1606378819440. Its totient is φ = 1602508025448.

The previous prime is 1604443422437. The next prime is 1604443422499. The reversal of 1604443422443 is 3442243444061.

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

It is a cyclic number.

It is not a de Polignac number, because 1604443422443 - 2⁴⁰ = 504931794667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1604443422443.

It is not an unprimeable number, because it can be changed into a prime (1604443421443) 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, 967697255 + ... + 967698912.

It is an arithmetic number, because the mean of its divisors is an integer number (401594704860).

Almost surely, 2^{1604443422443} is an apocalyptic number.

1604443422443 is a deficient number, since it is larger than the sum of its proper divisors (1935396997).

1604443422443 is an equidigital number, since it uses as much as digits as its factorization.

1604443422443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935396996.

The product of its (nonzero) digits is 884736, while the sum is 41.

The spelling of 1604443422443 in words is "one trillion, six hundred four billion, four hundred forty-three million, four hundred twenty-two thousand, four hundred forty-three".