216604625611 has 4 divisors (see below), whose sum is σ = 236295955224. Its totient is φ = 196913296000.

The previous prime is 216604625603. The next prime is 216604625617. The reversal of 216604625611 is 116526406612.

216604625611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 216604625611 - 2³ = 216604625603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216604625617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9845664790 + ... + 9845664811.

It is an arithmetic number, because the mean of its divisors is an integer number (59073988806).

Almost surely, 2^216604625611 is an apocalyptic number.

216604625611 is a deficient number, since it is larger than the sum of its proper divisors (19691329613).

216604625611 is a wasteful number, since it uses less digits than its factorization.

216604625611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19691329612.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 216604625611 in words is "two hundred sixteen billion, six hundred four million, six hundred twenty-five thousand, six hundred eleven".