216357080164 has 9 divisors (see below), whose sum is σ = 378626518291. Its totient is φ = 108178074940.

The previous prime is 216357080153. The next prime is 216357080167. The reversal of 216357080164 is 461080753612.

The square root of 216357080164 is 465142.

It is a perfect power (a square), and thus also a powerful number.

216357080164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216357080164² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216357080164.

It is not an unprimeable number, because it can be changed into a prime (216357080167) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 813999 + ... + 1046569.

Almost surely, 2^216357080164 is an apocalyptic number.

216357080164 is the 465142-nd square number.

It is an amenable number.

216357080164 is a deficient number, since it is larger than the sum of its proper divisors (162269438127).

216357080164 is an frugal number, since it uses more digits than its factorization.

216357080164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465146 (or 232573 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 216357080164 in words is "two hundred sixteen billion, three hundred fifty-seven million, eighty thousand, one hundred sixty-four".