485638479855 has 64 divisors (see below), whose sum is σ = 878758934400. Its totient is φ = 254398786560.

The previous prime is 485638479841. The next prime is 485638479871. The reversal of 485638479855 is 558974836584.

485638479855 is a `hidden beast` number, since 4 + 8 + 563 + 8 + 4 + 7 + 9 + 8 + 55 = 666.

It is not a de Polignac number, because 485638479855 - 2⁷ = 485638479727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5797027 + ... + 5880203.

It is an arithmetic number, because the mean of its divisors is an integer number (13730608350).

Almost surely, 2^485638479855 is an apocalyptic number.

485638479855 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

485638479855 is a deficient number, since it is larger than the sum of its proper divisors (393120454545).

485638479855 is a wasteful number, since it uses less digits than its factorization.

485638479855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83961 (or 83955 counting only the distinct ones).

The product of its digits is 1161216000, while the sum is 72.

The spelling of 485638479855 in words is "four hundred eighty-five billion, six hundred thirty-eight million, four hundred seventy-nine thousand, eight hundred fifty-five".