216445155793 has 2 divisors, whose sum is σ = 216445155794. Its totient is φ = 216445155792.

The previous prime is 216445155721. The next prime is 216445155799. The reversal of 216445155793 is 397551544612.

216445155793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206558433169 + 9886722624 = 454487^2 + 99432^2 .

It is a cyclic number.

It is not a de Polignac number, because 216445155793 - 2⁹ = 216445155281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216445155793.

It is not a weakly prime, because it can be changed into another prime (216445155799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108222577896 + 108222577897.

It is an arithmetic number, because the mean of its divisors is an integer number (108222577897).

Almost surely, 2^216445155793 is an apocalyptic number.

It is an amenable number.

216445155793 is a deficient number, since it is larger than the sum of its proper divisors (1).

216445155793 is an equidigital number, since it uses as much as digits as its factorization.

216445155793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 52.

The spelling of 216445155793 in words is "two hundred sixteen billion, four hundred forty-five million, one hundred fifty-five thousand, seven hundred ninety-three".