804878320464 has 30 divisors (see below), whose sum is σ = 2252541411146. Its totient is φ = 268292773440.

The previous prime is 804878320457. The next prime is 804878320471. The reversal of 804878320464 is 464023878408.

It is a happy number.

804878320464 is a `hidden beast` number, since 8 + 0 + 4 + 87 + 83 + 20 + 464 = 666.

804878320464 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (804878320457) and next prime (804878320471).

It can be written as a sum of positive squares in only one way, i.e., 775702947600 + 29175372864 = 880740^2 + 170808^2 .

It is a super-2 number, since 2×804878320464² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 804878320464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2794716247 + ... + 2794716534.

Almost surely, 2^804878320464 is an apocalyptic number.

It is an amenable number.

804878320464 is an abundant number, since it is smaller than the sum of its proper divisors (1447663090682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

804878320464 is a wasteful number, since it uses less digits than its factorization.

804878320464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5589432795 (or 5589432786 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 54.

The spelling of 804878320464 in words is "eight hundred four billion, eight hundred seventy-eight million, three hundred twenty thousand, four hundred sixty-four".