216441625051 has 8 divisors (see below), whose sum is σ = 225981010080. Its totient is φ = 206912980032.

The previous prime is 216441625039. The next prime is 216441625061. The reversal of 216441625051 is 150526144612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216441625051 - 2²³ = 216433236443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216441625051.

It is not an unprimeable number, because it can be changed into a prime (216441625061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2643796 + ... + 2724433.

It is an arithmetic number, because the mean of its divisors is an integer number (28247626260).

Almost surely, 2^216441625051 is an apocalyptic number.

216441625051 is a deficient number, since it is larger than the sum of its proper divisors (9539385029).

216441625051 is a wasteful number, since it uses less digits than its factorization.

216441625051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370005.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 216441625051 its reverse (150526144612), we get a palindrome (366967769663).

The spelling of 216441625051 in words is "two hundred sixteen billion, four hundred forty-one million, six hundred twenty-five thousand, fifty-one".