217059750545 has 8 divisors (see below), whose sum is σ = 284150946240. Its totient is φ = 157861636720.

The previous prime is 217059750487. The next prime is 217059750553. The reversal of 217059750545 is 545057950712.

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

It is not a de Polignac number, because 217059750545 - 2¹⁴ = 217059734161 is a prime.

It is a super-2 number, since 2×217059750545² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 217059750493 and 217059750502.

It is an unprimeable number.

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, 1973270405 + ... + 1973270514.

It is an arithmetic number, because the mean of its divisors is an integer number (35518868280).

Almost surely, 2^217059750545 is an apocalyptic number.

It is an amenable number.

217059750545 is a deficient number, since it is larger than the sum of its proper divisors (67091195695).

217059750545 is a wasteful number, since it uses less digits than its factorization.

217059750545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946540935.

The product of its (nonzero) digits is 2205000, while the sum is 50.

The spelling of 217059750545 in words is "two hundred seventeen billion, fifty-nine million, seven hundred fifty thousand, five hundred forty-five".