216293623349 has 2 divisors, whose sum is σ = 216293623350. Its totient is φ = 216293623348.

The previous prime is 216293623339. The next prime is 216293623397. The reversal of 216293623349 is 943326392612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151724272324 + 64569351025 = 389518^2 + 254105^2 .

It is a cyclic number.

It is not a de Polignac number, because 216293623349 - 2⁸ = 216293623093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216293623297 and 216293623306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216293623339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108146811674 + 108146811675.

It is an arithmetic number, because the mean of its divisors is an integer number (108146811675).

Almost surely, 2^216293623349 is an apocalyptic number.

It is an amenable number.

216293623349 is a deficient number, since it is larger than the sum of its proper divisors (1).

216293623349 is an equidigital number, since it uses as much as digits as its factorization.

216293623349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 50.

The spelling of 216293623349 in words is "two hundred sixteen billion, two hundred ninety-three million, six hundred twenty-three thousand, three hundred forty-nine".