216660514304 has 80 divisors (see below), whose sum is σ = 469553644560. Its totient is φ = 99277332480.

The previous prime is 216660514271. The next prime is 216660514309. The reversal of 216660514304 is 403415066612.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216660514309) 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, 808094 + ... + 1042274.

It is an arithmetic number, because the mean of its divisors is an integer number (5869420557).

Almost surely, 2^216660514304 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 216660514304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234776822280).

216660514304 is an abundant number, since it is smaller than the sum of its proper divisors (252893130256).

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

216660514304 is a wasteful number, since it uses less digits than its factorization.

216660514304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234351 (or 234335 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 216660514304 in words is "two hundred sixteen billion, six hundred sixty million, five hundred fourteen thousand, three hundred four".