217113672704 has 88 divisors (see below), whose sum is σ = 459994307040. Its totient is φ = 102071402496.

The previous prime is 217113672703. The next prime is 217113672709. The reversal of 217113672704 is 407276311712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217113672703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19648109 + ... + 19659155.

Almost surely, 2^217113672704 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 217113672704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229997153520).

217113672704 is an abundant number, since it is smaller than the sum of its proper divisors (242880634336).

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

217113672704 is a wasteful number, since it uses less digits than its factorization.

217113672704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12213 (or 12195 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 217113672704 in words is "two hundred seventeen billion, one hundred thirteen million, six hundred seventy-two thousand, seven hundred four".