485461915131816 has 640 divisors, whose sum is σ = 1701471050484480. Its totient is φ = 126169546973184.

The previous prime is 485461915131803. The next prime is 485461915131829. The reversal of 485461915131816 is 618131519164584.

485461915131816 is a `hidden beast` number, since 4 + 8 + 5 + 4 + 6 + 1 + 91 + 513 + 18 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (485461915131803) and next prime (485461915131829).

It is a Harshad number since it is a multiple of its sum of digits (63).

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 159 ways as a sum of consecutive naturals, for example, 272938266 + ... + 274711158.

It is an arithmetic number, because the mean of its divisors is an integer number (2658548516382).

Almost surely, 2^{485461915131816} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 485461915131816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850735525242240).

485461915131816 is an abundant number, since it is smaller than the sum of its proper divisors (1216009135352664).

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

485461915131816 is a wasteful number, since it uses less digits than its factorization.

485461915131816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773055 (or 1773042 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 63.

The spelling of 485461915131816 in words is "four hundred eighty-five trillion, four hundred sixty-one billion, nine hundred fifteen million, one hundred thirty-one thousand, eight hundred sixteen".