216415474906 has 16 divisors (see below), whose sum is σ = 327131719200. Its totient is φ = 107371722640.

The previous prime is 216415474883. The next prime is 216415474991. The reversal of 216415474906 is 609474514612.

216415474906 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 216415474906.

It is an unprimeable number.

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, 3347520 + ... + 3411556.

It is an arithmetic number, because the mean of its divisors is an integer number (20445732450).

Almost surely, 2^216415474906 is an apocalyptic number.

216415474906 is a deficient number, since it is larger than the sum of its proper divisors (110716244294).

216415474906 is a wasteful number, since it uses less digits than its factorization.

216415474906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77069.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 216415474906 in words is "two hundred sixteen billion, four hundred fifteen million, four hundred seventy-four thousand, nine hundred six".