216214245066 has 16 divisors (see below), whose sum is σ = 432857073600. Its totient is φ = 71999984448.

The previous prime is 216214245031. The next prime is 216214245097. The reversal of 216214245066 is 660542412612.

It is a super-3 number, since 3×216214245066³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17851086 + ... + 17863193.

It is an arithmetic number, because the mean of its divisors is an integer number (27053567100).

Almost surely, 2^216214245066 is an apocalyptic number.

216214245066 is an abundant number, since it is smaller than the sum of its proper divisors (216642828534).

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

216214245066 is a wasteful number, since it uses less digits than its factorization.

216214245066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35715293.

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 216214245066 its reverse (660542412612), we get a palindrome (876756657678).

It can be divided in two parts, 216214 and 245066, that added together give a triangular number (461280 = T₉₆₀).

The spelling of 216214245066 in words is "two hundred sixteen billion, two hundred fourteen million, two hundred forty-five thousand, sixty-six".