216707632213449 has 32 divisors (see below), whose sum is σ = 321231531142144. Its totient is φ = 129047068650240.

The previous prime is 216707632213427. The next prime is 216707632213477. The reversal of 216707632213449 is 944312236707612.

It is not a de Polignac number, because 216707632213449 - 2⁷ = 216707632213321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216707632413449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9643647 + ... + 22943739.

It is an arithmetic number, because the mean of its divisors is an integer number (10038485348192).

Almost surely, 2^{216707632213449} is an apocalyptic number.

It is an amenable number.

216707632213449 is a deficient number, since it is larger than the sum of its proper divisors (104523898928695).

216707632213449 is a wasteful number, since it uses less digits than its factorization.

216707632213449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13313617.

The product of its (nonzero) digits is 18289152, while the sum is 57.

The spelling of 216707632213449 in words is "two hundred sixteen trillion, seven hundred seven billion, six hundred thirty-two million, two hundred thirteen thousand, four hundred forty-nine".