612555666212 has 48 divisors (see below), whose sum is σ = 1235408993280. Its totient is φ = 260320288800.

The previous prime is 612555666209. The next prime is 612555666221. The reversal of 612555666212 is 212666555216.

612555666212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4774787 + ... + 4901397.

It is an arithmetic number, because the mean of its divisors is an integer number (25737687360).

Almost surely, 2^612555666212 is an apocalyptic number.

It is an amenable number.

612555666212 is an abundant number, since it is smaller than the sum of its proper divisors (622853327068).

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

612555666212 is a wasteful number, since it uses less digits than its factorization.

612555666212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128072 (or 128070 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 47.

The spelling of 612555666212 in words is "six hundred twelve billion, five hundred fifty-five million, six hundred sixty-six thousand, two hundred twelve".