216464011 has 4 divisors (see below), whose sum is σ = 216510624. Its totient is φ = 216417400.

The previous prime is 216463997. The next prime is 216464047. The reversal of 216464011 is 110464612.

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 216464011 - 2⁷ = 216463883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216464711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15460 + ... + 25921.

It is an arithmetic number, because the mean of its divisors is an integer number (54127656).

Almost surely, 2^216464011 is an apocalyptic number.

216464011 is a deficient number, since it is larger than the sum of its proper divisors (46613).

216464011 is an equidigital number, since it uses as much as digits as its factorization.

216464011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46612.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 216464011 is about 14712.7159627310. The cubic root of 216464011 is about 600.4293325308.

The spelling of 216464011 in words is "two hundred sixteen million, four hundred sixty-four thousand, eleven".