216125164264 has 32 divisors (see below), whose sum is σ = 413577358920. Its totient is φ = 105844750336.

The previous prime is 216125164237. The next prime is 216125164289. The reversal of 216125164264 is 462461521612.

It can be written as a sum of positive squares in 4 ways, for example, as 163505392164 + 52619772100 = 404358^2 + 229390^2 .

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, 178357 + ... + 681220.

Almost surely, 2^216125164264 is an apocalyptic number.

It is an amenable number.

216125164264 is a deficient number, since it is larger than the sum of its proper divisors (197452194656).

216125164264 is a wasteful number, since it uses less digits than its factorization.

216125164264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860229 (or 860225 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

Adding to 216125164264 its reverse (462461521612), we get a palindrome (678586685876).

The spelling of 216125164264 in words is "two hundred sixteen billion, one hundred twenty-five million, one hundred sixty-four thousand, two hundred sixty-four".