208376066418 has 64 divisors (see below), whose sum is σ = 457179690240. Its totient is φ = 62931068928.

The previous prime is 208376066417. The next prime is 208376066453. The reversal of 208376066418 is 814660673802.

It is not an unprimeable number, because it can be changed into a prime (208376066417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793078 + ... + 1022606.

It is an arithmetic number, because the mean of its divisors is an integer number (7143432660).

Almost surely, 2^208376066418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208376066418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228589845120).

208376066418 is an abundant number, since it is smaller than the sum of its proper divisors (248803623822).

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

208376066418 is a wasteful number, since it uses less digits than its factorization.

208376066418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229763.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 208376066418 in words is "two hundred eight billion, three hundred seventy-six million, sixty-six thousand, four hundred eighteen".