804645861443 has 4 divisors (see below), whose sum is σ = 804659154168. Its totient is φ = 804632568720.

The previous prime is 804645861367. The next prime is 804645861521. The reversal of 804645861443 is 344168546408.

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 804645861443 - 2¹² = 804645857347 is a prime.

It is a super-3 number, since 3×804645861443³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804645861343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6555146 + ... + 6676767.

It is an arithmetic number, because the mean of its divisors is an integer number (201164788542).

Almost surely, 2^804645861443 is an apocalyptic number.

804645861443 is a deficient number, since it is larger than the sum of its proper divisors (13292725).

804645861443 is a wasteful number, since it uses less digits than its factorization.

804645861443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13292724.

The product of its (nonzero) digits is 8847360, while the sum is 53.

The spelling of 804645861443 in words is "eight hundred four billion, six hundred forty-five million, eight hundred sixty-one thousand, four hundred forty-three".