216544041348 has 12 divisors (see below), whose sum is σ = 505269429840. Its totient is φ = 72181347112.

The previous prime is 216544041341. The next prime is 216544041359. The reversal of 216544041348 is 843140445612.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (216544041341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9022668378 + ... + 9022668401.

It is an arithmetic number, because the mean of its divisors is an integer number (42105785820).

Almost surely, 2^216544041348 is an apocalyptic number.

It is an amenable number.

216544041348 is an abundant number, since it is smaller than the sum of its proper divisors (288725388492).

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

216544041348 is a wasteful number, since it uses less digits than its factorization.

216544041348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18045336786 (or 18045336784 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 216544041348 in words is "two hundred sixteen billion, five hundred forty-four million, forty-one thousand, three hundred forty-eight".