478685301857 has 6 divisors (see below), whose sum is σ = 556838004258. Its totient is φ = 410301687264.

The previous prime is 478685301823. The next prime is 478685301869. The reversal of 478685301857 is 758103586874.

It can be written as a sum of positive squares in only one way, i.e., 290128740496 + 188556561361 = 538636^2 + 434231^2 .

It is not a de Polignac number, because 478685301857 - 2¹⁰ = 478685300833 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 478685301857.

It is not an unprimeable number, because it can be changed into a prime (478685306857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4884543848 + ... + 4884543945.

It is an arithmetic number, because the mean of its divisors is an integer number (92806334043).

Almost surely, 2^478685301857 is an apocalyptic number.

It is an amenable number.

478685301857 is a deficient number, since it is larger than the sum of its proper divisors (78152702401).

478685301857 is an equidigital number, since it uses as much as digits as its factorization.

478685301857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769087807 (or 9769087800 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 478685301857 in words is "four hundred seventy-eight billion, six hundred eighty-five million, three hundred one thousand, eight hundred fifty-seven".