216180713124 has 18 divisors (see below), whose sum is σ = 546456802710. Its totient is φ = 72060237696.

The previous prime is 216180713093. The next prime is 216180713159. The reversal of 216180713124 is 421317081612.

216180713124 is a `hidden beast` number, since 2 + 1 + 618 + 0 + 7 + 1 + 31 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 214693222500 + 1487490624 = 463350^2 + 38568^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6005019809 = 216180713124 / (2 + 1 + 6 + 1 + 8 + 0 + 7 + 1 + 3 + 1 + 2 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3002509869 + ... + 3002509940.

Almost surely, 2^216180713124 is an apocalyptic number.

It is an amenable number.

216180713124 is an abundant number, since it is smaller than the sum of its proper divisors (330276089586).

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

216180713124 is a wasteful number, since it uses less digits than its factorization.

216180713124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005019819 (or 6005019814 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

Adding to 216180713124 its reverse (421317081612), we get a palindrome (637497794736).

The spelling of 216180713124 in words is "two hundred sixteen billion, one hundred eighty million, seven hundred thirteen thousand, one hundred twenty-four".