206895216808 has 64 divisors (see below), whose sum is σ = 451916496000. Its totient is φ = 86956975872.

The previous prime is 206895216791. The next prime is 206895216811. The reversal of 206895216808 is 808612598602.

It is a happy 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, 7075963 + ... + 7105141.

It is an arithmetic number, because the mean of its divisors is an integer number (7061195250).

Almost surely, 2^206895216808 is an apocalyptic number.

206895216808 is a gapful number since it is divisible by the number (28) 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 206895216808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225958248000).

206895216808 is an abundant number, since it is smaller than the sum of its proper divisors (245021279192).

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

206895216808 is a wasteful number, since it uses less digits than its factorization.

206895216808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31634 (or 31630 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 206895216808 in words is "two hundred six billion, eight hundred ninety-five million, two hundred sixteen thousand, eight hundred eight".