218393968902 has 8 divisors (see below), whose sum is σ = 436787937816. Its totient is φ = 72797989632.

The previous prime is 218393968879. The next prime is 218393968907. The reversal of 218393968902 is 209869393812.

It is a sphenic number, since it is the product of 3 distinct primes.

218393968902 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218393968907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18199497403 + ... + 18199497414.

It is an arithmetic number, because the mean of its divisors is an integer number (54598492227).

Almost surely, 2^218393968902 is an apocalyptic number.

218393968902 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.

218393968902 is a wasteful number, since it uses less digits than its factorization.

218393968902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36398994822.

The product of its (nonzero) digits is 10077696, while the sum is 60.

The spelling of 218393968902 in words is "two hundred eighteen billion, three hundred ninety-three million, nine hundred sixty-eight thousand, nine hundred two".