217798383260 has 12 divisors (see below), whose sum is σ = 457376604888. Its totient is φ = 87119353296.

The previous prime is 217798383259. The next prime is 217798383307. The reversal of 217798383260 is 62383897712.

It is a super-3 number, since 3×217798383260³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 217798383196 and 217798383205.

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, 5444959562 + ... + 5444959601.

It is an arithmetic number, because the mean of its divisors is an integer number (38114717074).

Almost surely, 2^217798383260 is an apocalyptic number.

217798383260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

217798383260 is an abundant number, since it is smaller than the sum of its proper divisors (239578221628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217798383260 is a wasteful number, since it uses less digits than its factorization.

217798383260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889919172 (or 10889919170 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 217798383260 in words is "two hundred seventeen billion, seven hundred ninety-eight million, three hundred eighty-three thousand, two hundred sixty".