804166038664 has 16 divisors (see below), whose sum is σ = 1509647889420. Its totient is φ = 401593268160.

The previous prime is 804166038649. The next prime is 804166038703. The reversal of 804166038664 is 466830661408.

804166038664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 759090502564 + 45075536100 = 871258^2 + 212310^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61211919 + ... + 61225054.

Almost surely, 2^804166038664 is an apocalyptic number.

It is an amenable number.

804166038664 is a deficient number, since it is larger than the sum of its proper divisors (705481850756).

804166038664 is a wasteful number, since it uses less digits than its factorization.

804166038664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122437800 (or 122437796 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 804166038664 in words is "eight hundred four billion, one hundred sixty-six million, thirty-eight thousand, six hundred sixty-four".