216544041308 has 12 divisors (see below), whose sum is σ = 433088082672. Its totient is φ = 92804589120.

The previous prime is 216544041293. The next prime is 216544041317. The reversal of 216544041308 is 803140445612.

It is a happy number.

216544041308 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3866857853 + ... + 3866857908.

It is an arithmetic number, because the mean of its divisors is an integer number (36090673556).

Almost surely, 2^216544041308 is an apocalyptic number.

216544041308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216544041308 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216544041308 is a wasteful number, since it uses less digits than its factorization.

216544041308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733715772 (or 7733715770 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 216544041308 in words is "two hundred sixteen billion, five hundred forty-four million, forty-one thousand, three hundred eight".