216335565402 has 16 divisors (see below), whose sum is σ = 472004870112. Its totient is φ = 65556231920.

The previous prime is 216335565377. The next prime is 216335565421. The reversal of 216335565402 is 204565533612.

It is a happy number.

216335565402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1638905733 + ... + 1638905864.

It is an arithmetic number, because the mean of its divisors is an integer number (29500304382).

Almost surely, 2^216335565402 is an apocalyptic number.

216335565402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216335565402 is an abundant number, since it is smaller than the sum of its proper divisors (255669304710).

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

216335565402 is a wasteful number, since it uses less digits than its factorization.

216335565402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277811613.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 216335565402 in words is "two hundred sixteen billion, three hundred thirty-five million, five hundred sixty-five thousand, four hundred two".