217533454059 has 16 divisors (see below), whose sum is σ = 305322608000. Its totient is φ = 137383926336.

The previous prime is 217533454031. The next prime is 217533454079. The reversal of 217533454059 is 950454335712.

It is not a de Polignac number, because 217533454059 - 2²⁰ = 217532405483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 217533453999 and 217533454017.

It is not an unprimeable number, because it can be changed into a prime (217533454079) 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 15 ways as a sum of consecutive naturals, for example, 1664892 + ... + 1790790.

It is an arithmetic number, because the mean of its divisors is an integer number (19082663000).

Almost surely, 2^217533454059 is an apocalyptic number.

217533454059 is a deficient number, since it is larger than the sum of its proper divisors (87789153941).

217533454059 is a wasteful number, since it uses less digits than its factorization.

217533454059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156234.

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 217533454059 in words is "two hundred seventeen billion, five hundred thirty-three million, four hundred fifty-four thousand, fifty-nine".