16213232566655 has 8 divisors (see below), whose sum is σ = 19456192183392. Its totient is φ = 12970377317728.

The previous prime is 16213232566651. The next prime is 16213232566691. The reversal of 16213232566655 is 55666523231261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16213232566655 - 2² = 16213232566651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16213232566597 and 16213232566606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213232566651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25749779 + ... + 26371908.

It is an arithmetic number, because the mean of its divisors is an integer number (2432024022924).

Almost surely, 2^{16213232566655} is an apocalyptic number.

16213232566655 is a deficient number, since it is larger than the sum of its proper divisors (3242959616737).

16213232566655 is an equidigital number, since it uses as much as digits as its factorization.

16213232566655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52183905.

The product of its digits is 11664000, while the sum is 53.

The spelling of 16213232566655 in words is "sixteen trillion, two hundred thirteen billion, two hundred thirty-two million, five hundred sixty-six thousand, six hundred fifty-five".