217269892993 has 4 divisors (see below), whose sum is σ = 218980679680. Its totient is φ = 215559106308.

The previous prime is 217269892991. The next prime is 217269893023. The reversal of 217269892993 is 399298962712.

217269892993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 217269892993 - 2¹ = 217269892991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217269892991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855393153 + ... + 855393406.

It is an arithmetic number, because the mean of its divisors is an integer number (54745169920).

Almost surely, 2^217269892993 is an apocalyptic number.

It is an amenable number.

217269892993 is a deficient number, since it is larger than the sum of its proper divisors (1710786687).

217269892993 is a wasteful number, since it uses less digits than its factorization.

217269892993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710786686.

The product of its digits is 52907904, while the sum is 67.

The spelling of 217269892993 in words is "two hundred seventeen billion, two hundred sixty-nine million, eight hundred ninety-two thousand, nine hundred ninety-three".