612665566216 has 32 divisors (see below), whose sum is σ = 1262195272800. Its totient is φ = 276480858240.

The previous prime is 612665566207. The next prime is 612665566241.

612665566216 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25031325 + ... + 25055788.

It is an arithmetic number, because the mean of its divisors is an integer number (39443602275).

Almost surely, 2^612665566216 is an apocalyptic number.

It is an amenable number.

612665566216 is an abundant number, since it is smaller than the sum of its proper divisors (649529706584).

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

612665566216 is a wasteful number, since it uses less digits than its factorization.

612665566216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50087269 (or 50087265 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The spelling of 612665566216 in words is "six hundred twelve billion, six hundred sixty-five million, five hundred sixty-six thousand, two hundred sixteen".