216525244036 has 12 divisors (see below), whose sum is σ = 380491457500. Its totient is φ = 107813399040.

The previous prime is 216525244027. The next prime is 216525244049. The reversal of 216525244036 is 630442525612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165356089600 + 51169154436 = 406640^2 + 226206^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 216525244036.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112304661 + ... + 112306588.

Almost surely, 2^216525244036 is an apocalyptic number.

It is an amenable number.

216525244036 is a deficient number, since it is larger than the sum of its proper divisors (163966213464).

216525244036 is a wasteful number, since it uses less digits than its factorization.

216525244036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224611494 (or 224611492 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 216525244036 its reverse (630442525612), we get a palindrome (846967769648).

The spelling of 216525244036 in words is "two hundred sixteen billion, five hundred twenty-five million, two hundred forty-four thousand, thirty-six".