218796539208 has 128 divisors (see below), whose sum is σ = 592405228800. Its totient is φ = 66941715456.

The previous prime is 218796539189. The next prime is 218796539233. The reversal of 218796539208 is 802935697812.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41776366 + ... + 41781602.

It is an arithmetic number, because the mean of its divisors is an integer number (4628165850).

Almost surely, 2^218796539208 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 218796539208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296202614400).

218796539208 is an abundant number, since it is smaller than the sum of its proper divisors (373608689592).

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

218796539208 is a wasteful number, since it uses less digits than its factorization.

218796539208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991 (or 5987 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 218796539208 in words is "two hundred eighteen billion, seven hundred ninety-six million, five hundred thirty-nine thousand, two hundred eight".