217472660000 has 120 divisors (see below), whose sum is σ = 536773240080. Its totient is φ = 86703264000.

The previous prime is 217472659993. The next prime is 217472660011. The reversal of 217472660000 is 66274712.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6122291 + ... + 6157709.

It is an arithmetic number, because the mean of its divisors is an integer number (4473110334).

Almost surely, 2^217472660000 is an apocalyptic number.

217472660000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 217472660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268386620040).

217472660000 is an abundant number, since it is smaller than the sum of its proper divisors (319300580080).

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

217472660000 is an equidigital number, since it uses as much as digits as its factorization.

217472660000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35756 (or 35733 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 217472660000 in words is "two hundred seventeen billion, four hundred seventy-two million, six hundred sixty thousand".