216883516835 has 4 divisors (see below), whose sum is σ = 260260220208. Its totient is φ = 173506813464.

The previous prime is 216883516813. The next prime is 216883516847. The reversal of 216883516835 is 538615388612.

It is a happy number.

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 216883516835 - 2⁶ = 216883516771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21688351679 + ... + 21688351688.

It is an arithmetic number, because the mean of its divisors is an integer number (65065055052).

Almost surely, 2^216883516835 is an apocalyptic number.

216883516835 is a deficient number, since it is larger than the sum of its proper divisors (43376703373).

216883516835 is an equidigital number, since it uses as much as digits as its factorization.

216883516835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43376703372.

The product of its digits is 8294400, while the sum is 56.

The spelling of 216883516835 in words is "two hundred sixteen billion, eight hundred eighty-three million, five hundred sixteen thousand, eight hundred thirty-five".