217612325805047 has 8 divisors (see below), whose sum is σ = 219055625596512. Its totient is φ = 216169054416000.

The previous prime is 217612325805041. The next prime is 217612325805059. The reversal of 217612325805047 is 740508523216712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 217612325805047 - 2⁶ = 217612325804983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 217612325805047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217612325805041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8385347 + ... + 22484187.

It is an arithmetic number, because the mean of its divisors is an integer number (27381953199564).

Almost surely, 2^{217612325805047} is an apocalyptic number.

217612325805047 is a deficient number, since it is larger than the sum of its proper divisors (1443299791465).

217612325805047 is a wasteful number, since it uses less digits than its factorization.

217612325805047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14201209.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 217612325805047 in words is "two hundred seventeen trillion, six hundred twelve billion, three hundred twenty-five million, eight hundred five thousand, forty-seven".