217438828834712 has 16 divisors (see below), whose sum is σ = 407983506822360. Its totient is φ = 108643227015424.

The previous prime is 217438828834709. The next prime is 217438828834739.

217438828834712 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×217438828834712² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9523413113 + ... + 9523435944.

Almost surely, 2^{217438828834712} is an apocalyptic number.

It is an amenable number.

217438828834712 is a deficient number, since it is larger than the sum of its proper divisors (190544677987648).

217438828834712 is a wasteful number, since it uses less digits than its factorization.

217438828834712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19046850490 (or 19046850486 counting only the distinct ones).

The product of its digits is 231211008, while the sum is 68.

The spelling of 217438828834712 in words is "two hundred seventeen trillion, four hundred thirty-eight billion, eight hundred twenty-eight million, eight hundred thirty-four thousand, seven hundred twelve".