212586066568 has 16 divisors (see below), whose sum is σ = 398625486480. Its totient is φ = 106285936848.

The previous prime is 212586066449. The next prime is 212586066599. The reversal of 212586066568 is 865660685212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 758646 + ... + 1000357.

It is an arithmetic number, because the mean of its divisors is an integer number (24914092905).

Almost surely, 2^212586066568 is an apocalyptic number.

It is an amenable number.

212586066568 is a deficient number, since it is larger than the sum of its proper divisors (186039419912).

212586066568 is a wasteful number, since it uses less digits than its factorization.

212586066568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774116 (or 1774112 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 212586066568 in words is "two hundred twelve billion, five hundred eighty-six million, sixty-six thousand, five hundred sixty-eight".