216201346166 has 32 divisors (see below), whose sum is σ = 351824528160. Its totient is φ = 99050455296.

The previous prime is 216201346159. The next prime is 216201346181. The reversal of 216201346166 is 661643102612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4133570 + ... + 4185546.

It is an arithmetic number, because the mean of its divisors is an integer number (10994516505).

Almost surely, 2^216201346166 is an apocalyptic number.

216201346166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

216201346166 is a deficient number, since it is larger than the sum of its proper divisors (135623181994).

216201346166 is a wasteful number, since it uses less digits than its factorization.

216201346166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53168.

The product of its (nonzero) digits is 62208, while the sum is 38.

Adding to 216201346166 its reverse (661643102612), we get a palindrome (877844448778).

The spelling of 216201346166 in words is "two hundred sixteen billion, two hundred one million, three hundred forty-six thousand, one hundred sixty-six".