217038699797 has 8 divisors (see below), whose sum is σ = 241900718400. Its totient is φ = 193520574144.

The previous prime is 217038699769. The next prime is 217038699817. The reversal of 217038699797 is 797996830712.

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

It is not a de Polignac number, because 217038699797 - 2⁶ = 217038699733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217038699737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335972897 + ... + 335973542.

It is an arithmetic number, because the mean of its divisors is an integer number (30237589800).

Almost surely, 2^217038699797 is an apocalyptic number.

It is an amenable number.

217038699797 is a deficient number, since it is larger than the sum of its proper divisors (24862018603).

217038699797 is a wasteful number, since it uses less digits than its factorization.

217038699797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671946475.

The product of its (nonzero) digits is 72013536, while the sum is 68.

The spelling of 217038699797 in words is "two hundred seventeen billion, thirty-eight million, six hundred ninety-nine thousand, seven hundred ninety-seven".