612818161812 has 24 divisors (see below), whose sum is σ = 1588787827200. Its totient is φ = 204272720568.

The previous prime is 612818161763. The next prime is 612818161859. The reversal of 612818161812 is 218161818216.

612818161812 is a `hidden beast` number, since 6 + 1 + 2 + 8 + 18 + 1 + 618 + 12 = 666.

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 7 ways as a sum of consecutive naturals, for example, 2837121012 + ... + 2837121227.

It is an arithmetic number, because the mean of its divisors is an integer number (66199492800).

Almost surely, 2^612818161812 is an apocalyptic number.

It is an amenable number.

612818161812 is an abundant number, since it is smaller than the sum of its proper divisors (975969665388).

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

612818161812 is a wasteful number, since it uses less digits than its factorization.

612818161812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674242252 (or 5674242244 counting only the distinct ones).

The product of its digits is 73728, while the sum is 45.

The spelling of 612818161812 in words is "six hundred twelve billion, eight hundred eighteen million, one hundred sixty-one thousand, eight hundred twelve".