217350536089 has 4 divisors (see below), whose sum is σ = 217683385956. Its totient is φ = 217017686224.

The previous prime is 217350536027. The next prime is 217350536167. The reversal of 217350536089 is 980635053712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21205184400 + 196145351689 = 145620^2 + 442883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-217350536089 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217350536009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166423954 + ... + 166425259.

It is an arithmetic number, because the mean of its divisors is an integer number (54420846489).

Almost surely, 2^217350536089 is an apocalyptic number.

It is an amenable number.

217350536089 is a deficient number, since it is larger than the sum of its proper divisors (332849867).

217350536089 is an equidigital number, since it uses as much as digits as its factorization.

217350536089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332849866.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 217350536089 in words is "two hundred seventeen billion, three hundred fifty million, five hundred thirty-six thousand, eighty-nine".