486638942885 has 4 divisors (see below), whose sum is σ = 583966731468. Its totient is φ = 389311154304.

The previous prime is 486638942837. The next prime is 486638942939. The reversal of 486638942885 is 588249836684.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 199410474916 + 287228467969 = 446554^2 + 535937^2 .

It is a cyclic number.

It is not a de Polignac number, because 486638942885 - 2¹⁸ = 486638680741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48663894284 + ... + 48663894293.

It is an arithmetic number, because the mean of its divisors is an integer number (145991682867).

Almost surely, 2^486638942885 is an apocalyptic number.

It is an amenable number.

486638942885 is a deficient number, since it is larger than the sum of its proper divisors (97327788583).

486638942885 is an equidigital number, since it uses as much as digits as its factorization.

486638942885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97327788582.

The product of its digits is 637009920, while the sum is 71.

The spelling of 486638942885 in words is "four hundred eighty-six billion, six hundred thirty-eight million, nine hundred forty-two thousand, eight hundred eighty-five".