216675534571 has 2 divisors, whose sum is σ = 216675534572. Its totient is φ = 216675534570.

The previous prime is 216675534487. The next prime is 216675534629. The reversal of 216675534571 is 175435576612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216675534571 - 2¹⁵ = 216675501803 is a prime.

It is not a weakly prime, because it can be changed into another prime (216675534071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108337767285 + 108337767286.

It is an arithmetic number, because the mean of its divisors is an integer number (108337767286).

Almost surely, 2^216675534571 is an apocalyptic number.

216675534571 is a deficient number, since it is larger than the sum of its proper divisors (1).

216675534571 is an equidigital number, since it uses as much as digits as its factorization.

216675534571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292000, while the sum is 52.

The spelling of 216675534571 in words is "two hundred sixteen billion, six hundred seventy-five million, five hundred thirty-four thousand, five hundred seventy-one".