478804221813 has 32 divisors (see below), whose sum is σ = 658472457600. Its totient is φ = 309325592576.

The previous prime is 478804221811. The next prime is 478804221853. The reversal of 478804221813 is 318122408874.

It is a cyclic number.

It is not a de Polignac number, because 478804221813 - 2¹ = 478804221811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478804221811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13383133 + ... + 13418861.

It is an arithmetic number, because the mean of its divisors is an integer number (20577264300).

Almost surely, 2^478804221813 is an apocalyptic number.

It is an amenable number.

478804221813 is a deficient number, since it is larger than the sum of its proper divisors (179668235787).

478804221813 is a wasteful number, since it uses less digits than its factorization.

478804221813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36821.

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 478804221813 in words is "four hundred seventy-eight billion, eight hundred four million, two hundred twenty-one thousand, eight hundred thirteen".