216104503805 has 16 divisors (see below), whose sum is σ = 272528027904. Its totient is φ = 164299181760.

The previous prime is 216104503801. The next prime is 216104503819. The reversal of 216104503805 is 508305401612.

216104503805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216104503805 - 2² = 216104503801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216104503801) 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 15 ways as a sum of consecutive naturals, for example, 13574981 + ... + 13590890.

It is an arithmetic number, because the mean of its divisors is an integer number (17033001744).

Almost surely, 2^216104503805 is an apocalyptic number.

It is an amenable number.

216104503805 is a deficient number, since it is larger than the sum of its proper divisors (56423524099).

216104503805 is a wasteful number, since it uses less digits than its factorization.

216104503805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27165956.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 216104503805 in words is "two hundred sixteen billion, one hundred four million, five hundred three thousand, eight hundred five".