216556026030611 has 2 divisors, whose sum is σ = 216556026030612. Its totient is φ = 216556026030610.

The previous prime is 216556026030577. The next prime is 216556026030661. The reversal of 216556026030611 is 116030620655612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216556026030611 - 2¹⁰ = 216556026029587 is a prime.

It is not a weakly prime, because it can be changed into another prime (216556026030661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108278013015305 + 108278013015306.

It is an arithmetic number, because the mean of its divisors is an integer number (108278013015306).

Almost surely, 2^{216556026030611} is an apocalyptic number.

216556026030611 is a deficient number, since it is larger than the sum of its proper divisors (1).

216556026030611 is an equidigital number, since it uses as much as digits as its factorization.

216556026030611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 216556026030611 in words is "two hundred sixteen trillion, five hundred fifty-six billion, twenty-six million, thirty thousand, six hundred eleven".