217429196317 has 8 divisors (see below), whose sum is σ = 218426300640. Its totient is φ = 216432506640.

The previous prime is 217429196251. The next prime is 217429196363. The reversal of 217429196317 is 713691924712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-217429196317 is a prime.

It is a super-2 number, since 2×217429196317² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217429296317) 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, 973038 + ... + 1175440.

It is an arithmetic number, because the mean of its divisors is an integer number (27303287580).

Almost surely, 2^217429196317 is an apocalyptic number.

It is an amenable number.

217429196317 is a deficient number, since it is larger than the sum of its proper divisors (997104323).

217429196317 is a wasteful number, since it uses less digits than its factorization.

217429196317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207323.

The product of its digits is 1143072, while the sum is 52.

The spelling of 217429196317 in words is "two hundred seventeen billion, four hundred twenty-nine million, one hundred ninety-six thousand, three hundred seventeen".