217541343145712 has 20 divisors (see below), whose sum is σ = 421491582841176. Its totient is φ = 108769321767360.

The previous prime is 217541343145663. The next prime is 217541343145717.

It is a happy number.

217541343145712 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217541343145717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83032598 + ... + 85612469.

Almost surely, 2^{217541343145712} is an apocalyptic number.

It is an amenable number.

217541343145712 is a deficient number, since it is larger than the sum of its proper divisors (203950239695464).

217541343145712 is a wasteful number, since it uses less digits than its factorization.

217541343145712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168725696 (or 168725690 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 50.

The spelling of 217541343145712 in words is "two hundred seventeen trillion, five hundred forty-one billion, three hundred forty-three million, one hundred forty-five thousand, seven hundred twelve".