217847080412 has 24 divisors (see below), whose sum is σ = 414324556800. Its totient is φ = 99622374336.

The previous prime is 217847080331. The next prime is 217847080417. The reversal of 217847080412 is 214080748712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217847080417) 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, 19211612 + ... + 19222947.

It is an arithmetic number, because the mean of its divisors is an integer number (17263523200).

Almost surely, 2^217847080412 is an apocalyptic number.

It is an amenable number.

217847080412 is a deficient number, since it is larger than the sum of its proper divisors (196477476388).

217847080412 is a wasteful number, since it uses less digits than its factorization.

217847080412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38434685 (or 38434683 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 217847080412 in words is "two hundred seventeen billion, eight hundred forty-seven million, eighty thousand, four hundred twelve".