485781561816 has 64 divisors (see below), whose sum is σ = 1244192957280. Its totient is φ = 157962731520.

The previous prime is 485781561803. The next prime is 485781561851. The reversal of 485781561816 is 618165187584.

It is a self number, because there is not a number n which added to its sum of digits gives 485781561816.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15666520 + ... + 15697496.

Almost surely, 2^485781561816 is an apocalyptic number.

It is an amenable number.

485781561816 is an abundant number, since it is smaller than the sum of its proper divisors (758411395464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

485781561816 is a wasteful number, since it uses less digits than its factorization.

485781561816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46964 (or 46960 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 60.

The spelling of 485781561816 in words is "four hundred eighty-five billion, seven hundred eighty-one million, five hundred sixty-one thousand, eight hundred sixteen".