216006655213 has 4 divisors (see below), whose sum is σ = 227375426560. Its totient is φ = 204637883868.

The previous prime is 216006655211. The next prime is 216006655217. The reversal of 216006655213 is 312556600612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216006655213 - 2¹ = 216006655211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216006655211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684385645 + ... + 5684385682.

It is an arithmetic number, because the mean of its divisors is an integer number (56843856640).

Almost surely, 2^216006655213 is an apocalyptic number.

It is an amenable number.

216006655213 is a deficient number, since it is larger than the sum of its proper divisors (11368771347).

216006655213 is a wasteful number, since it uses less digits than its factorization.

216006655213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11368771346.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 216006655213 in words is "two hundred sixteen billion, six million, six hundred fifty-five thousand, two hundred thirteen".