217485357086 has 8 divisors (see below), whose sum is σ = 333814734264. Its totient is φ = 106213779000.

The previous prime is 217485357073. The next prime is 217485357119. The reversal of 217485357086 is 680753584712.

217485357086 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×217485357086² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264449665 + ... + 1264449836.

It is an arithmetic number, because the mean of its divisors is an integer number (41726841783).

Almost surely, 2^217485357086 is an apocalyptic number.

217485357086 is a deficient number, since it is larger than the sum of its proper divisors (116329377178).

217485357086 is a wasteful number, since it uses less digits than its factorization.

217485357086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528899546.

The product of its (nonzero) digits is 11289600, while the sum is 56.

The spelling of 217485357086 in words is "two hundred seventeen billion, four hundred eighty-five million, three hundred fifty-seven thousand, eighty-six".