216441625052 has 18 divisors (see below), whose sum is σ = 387786380688. Its totient is φ = 105704045832.

The previous prime is 216441625039. The next prime is 216441625061. The reversal of 216441625052 is 250526144612.

It is a junction number, because it is equal to n+sod(n) for n = 216441624997 and 216441625015.

It is a congruent number.

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, 14624948 + ... + 14639739.

It is an arithmetic number, because the mean of its divisors is an integer number (21543687816).

Almost surely, 2^216441625052 is an apocalyptic number.

It is an amenable number.

216441625052 is a deficient number, since it is larger than the sum of its proper divisors (171344755636).

216441625052 is a wasteful number, since it uses less digits than its factorization.

216441625052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29264777 (or 29264732 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

Adding to 216441625052 its reverse (250526144612), we get a palindrome (466967769664).

The spelling of 216441625052 in words is "two hundred sixteen billion, four hundred forty-one million, six hundred twenty-five thousand, fifty-two".