216480660352 has 128 divisors (see below), whose sum is σ = 495705899520. Its totient is φ = 93206784000.

The previous prime is 216480660343. The next prime is 216480660367. The reversal of 216480660352 is 253066084612.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 216480660299 and 216480660308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3303102 + ... + 3368002.

It is an arithmetic number, because the mean of its divisors is an integer number (3872702340).

Almost surely, 2^216480660352 is an apocalyptic number.

216480660352 is a gapful number since it is divisible by the number (22) 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 216480660352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247852949760).

216480660352 is an abundant number, since it is smaller than the sum of its proper divisors (279225239168).

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

216480660352 is a wasteful number, since it uses less digits than its factorization.

216480660352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65052 (or 65040 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 216480660352 in words is "two hundred sixteen billion, four hundred eighty million, six hundred sixty thousand, three hundred fifty-two".