217506344326412 has 12 divisors (see below), whose sum is σ = 380698166221296. Its totient is φ = 108735439691760.

The previous prime is 217506344326399. The next prime is 217506344326451. The reversal of 217506344326412 is 214623443605712.

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, 4433090264 + ... + 4433139327.

It is an arithmetic number, because the mean of its divisors is an integer number (31724847185108).

Almost surely, 2^{217506344326412} is an apocalyptic number.

It is an amenable number.

217506344326412 is a deficient number, since it is larger than the sum of its proper divisors (163191821894884).

217506344326412 is a wasteful number, since it uses less digits than its factorization.

217506344326412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866235728 (or 8866235726 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 217506344326412 in words is "two hundred seventeen trillion, five hundred six billion, three hundred forty-four million, three hundred twenty-six thousand, four hundred twelve".