217196626712 has 64 divisors (see below), whose sum is σ = 443990121120. Its totient is φ = 99011340288.

The previous prime is 217196626709. The next prime is 217196626721. The reversal of 217196626712 is 217626691712.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3721178 + ... + 3779094.

Almost surely, 2^217196626712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 217196626712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221995060560).

217196626712 is an abundant number, since it is smaller than the sum of its proper divisors (226793494408).

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

217196626712 is a wasteful number, since it uses less digits than its factorization.

217196626712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58380 (or 58376 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The spelling of 217196626712 in words is "two hundred seventeen billion, one hundred ninety-six million, six hundred twenty-six thousand, seven hundred twelve".