216680361143 has 2 divisors, whose sum is σ = 216680361144. Its totient is φ = 216680361142.

The previous prime is 216680361097. The next prime is 216680361193. The reversal of 216680361143 is 341163086612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216680361143 - 2⁸ = 216680360887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216680361143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216680361193) 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 as a sum of consecutive naturals, namely, 108340180571 + 108340180572.

It is an arithmetic number, because the mean of its divisors is an integer number (108340180572).

Almost surely, 2^216680361143 is an apocalyptic number.

216680361143 is a deficient number, since it is larger than the sum of its proper divisors (1).

216680361143 is an equidigital number, since it uses as much as digits as its factorization.

216680361143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 216680361143 in words is "two hundred sixteen billion, six hundred eighty million, three hundred sixty-one thousand, one hundred forty-three".