478699313665 has 16 divisors (see below), whose sum is σ = 600131080080. Its totient is φ = 366093011200.

The previous prime is 478699313663. The next prime is 478699313671. The reversal of 478699313665 is 566313996874.

It can be written as a sum of positive squares in 8 ways, for example, as 103694948289 + 375004365376 = 322017^2 + 612376^2 .

It is not a de Polignac number, because 478699313665 - 2¹ = 478699313663 is a prime.

It is a super-4 number, since 4×478699313665⁴ (a number of 48 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478699313665.

It is not an unprimeable number, because it can be changed into a prime (478699313663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16328794 + ... + 16358083.

It is an arithmetic number, because the mean of its divisors is an integer number (37508192505).

Almost surely, 2^478699313665 is an apocalyptic number.

It is an amenable number.

478699313665 is a deficient number, since it is larger than the sum of its proper divisors (121431766415).

478699313665 is a wasteful number, since it uses less digits than its factorization.

478699313665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32687012.

The product of its digits is 176359680, while the sum is 67.

The spelling of 478699313665 in words is "four hundred seventy-eight billion, six hundred ninety-nine million, three hundred thirteen thousand, six hundred sixty-five".