216677065881848 has 128 divisors (see below), whose sum is σ = 489415201228800. Its totient is φ = 88613793676800.

The previous prime is 216677065881839. The next prime is 216677065881883. The reversal of 216677065881848 is 848188560776612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18965138 + ... + 28160798.

It is an arithmetic number, because the mean of its divisors is an integer number (3823556259600).

Almost surely, 2^{216677065881848} 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 216677065881848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244707600614400).

216677065881848 is an abundant number, since it is smaller than the sum of its proper divisors (272738135346952).

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

216677065881848 is a wasteful number, since it uses less digits than its factorization.

216677065881848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9196213 (or 9196209 counting only the distinct ones).

The product of its (nonzero) digits is 1734082560, while the sum is 77.

The spelling of 216677065881848 in words is "two hundred sixteen trillion, six hundred seventy-seven billion, sixty-five million, eight hundred eighty-one thousand, eight hundred forty-eight".