477809821682 has 6 divisors (see below), whose sum is σ = 716716198863. Its totient is φ = 238904422062.

The previous prime is 477809821639. The next prime is 477809821703. The reversal of 477809821682 is 286128908774.

It can be written as a sum of positive squares in only one way, i.e., 238904910841 + 238904910841 = 488779^2 + 488779^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=488779.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 733169 + ... + 1221947.

Almost surely, 2^477809821682 is an apocalyptic number.

477809821682 is a deficient number, since it is larger than the sum of its proper divisors (238906377181).

477809821682 is an frugal number, since it uses more digits than its factorization.

477809821682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977560 (or 488781 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 477809821682 in words is "four hundred seventy-seven billion, eight hundred nine million, eight hundred twenty-one thousand, six hundred eighty-two".