216227653556671 has 2 divisors, whose sum is σ = 216227653556672. Its totient is φ = 216227653556670.

The previous prime is 216227653556641. The next prime is 216227653556723. The reversal of 216227653556671 is 176655356722612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216227653556671 - 2⁴³ = 207431560534463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216227653556641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108113826778335 + 108113826778336.

It is an arithmetic number, because the mean of its divisors is an integer number (108113826778336).

Almost surely, 2^{216227653556671} is an apocalyptic number.

216227653556671 is a deficient number, since it is larger than the sum of its proper divisors (1).

216227653556671 is an equidigital number, since it uses as much as digits as its factorization.

216227653556671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512000, while the sum is 64.

The spelling of 216227653556671 in words is "two hundred sixteen trillion, two hundred twenty-seven billion, six hundred fifty-three million, five hundred fifty-six thousand, six hundred seventy-one".