216125164267 has 4 divisors (see below), whose sum is σ = 218860925920. Its totient is φ = 213389402616.

The previous prime is 216125164237. The next prime is 216125164289. The reversal of 216125164267 is 762461521612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216125164267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216125164237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367880708 + ... + 1367880865.

It is an arithmetic number, because the mean of its divisors is an integer number (54715231480).

Almost surely, 2^216125164267 is an apocalyptic number.

216125164267 is a deficient number, since it is larger than the sum of its proper divisors (2735761653).

216125164267 is an equidigital number, since it uses as much as digits as its factorization.

216125164267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735761652.

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

Adding to 216125164267 its reverse (762461521612), we get a palindrome (978586685879).

The spelling of 216125164267 in words is "two hundred sixteen billion, one hundred twenty-five million, one hundred sixty-four thousand, two hundred sixty-seven".