216732748811 has 2 divisors, whose sum is σ = 216732748812. Its totient is φ = 216732748810.

The previous prime is 216732748759. The next prime is 216732748823. The reversal of 216732748811 is 118847237612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216732748811 - 2²² = 216728554507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216732748811.

It is not a weakly prime, because it can be changed into another prime (216732748831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108366374405 + 108366374406.

It is an arithmetic number, because the mean of its divisors is an integer number (108366374406).

Almost surely, 2^216732748811 is an apocalyptic number.

216732748811 is a deficient number, since it is larger than the sum of its proper divisors (1).

216732748811 is an equidigital number, since it uses as much as digits as its factorization.

216732748811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 903168, while the sum is 50.

The spelling of 216732748811 in words is "two hundred sixteen billion, seven hundred thirty-two million, seven hundred forty-eight thousand, eight hundred eleven".