216122511406 has 16 divisors (see below), whose sum is σ = 335137405680. Its totient is φ = 104458403520.

The previous prime is 216122511403. The next prime is 216122511443. The reversal of 216122511406 is 604115221612.

It is a happy number.

216122511406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216122511401) 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 7 ways as a sum of consecutive naturals, for example, 12081156 + ... + 12099031.

It is an arithmetic number, because the mean of its divisors is an integer number (20946087855).

Almost surely, 2^216122511406 is an apocalyptic number.

216122511406 is a deficient number, since it is larger than the sum of its proper divisors (119014894274).

216122511406 is a wasteful number, since it uses less digits than its factorization.

216122511406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24180339.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 216122511406 in words is "two hundred sixteen billion, one hundred twenty-two million, five hundred eleven thousand, four hundred six".