216721006060711 has 4 divisors (see below), whose sum is σ = 217189085987872. Its totient is φ = 216252926133552.

The previous prime is 216721006060673. The next prime is 216721006060747. The reversal of 216721006060711 is 117060600127612.

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 216721006060711 - 2¹³ = 216721006052519 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 (216721006060211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234039962886 + ... + 234039963811.

It is an arithmetic number, because the mean of its divisors is an integer number (54297271496968).

Almost surely, 2^{216721006060711} is an apocalyptic number.

216721006060711 is a deficient number, since it is larger than the sum of its proper divisors (468079927161).

216721006060711 is an equidigital number, since it uses as much as digits as its factorization.

216721006060711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468079927160.

The product of its (nonzero) digits is 42336, while the sum is 40.

The spelling of 216721006060711 in words is "two hundred sixteen trillion, seven hundred twenty-one billion, six million, sixty thousand, seven hundred eleven".