8206155442349 has 2 divisors, whose sum is σ = 8206155442350. Its totient is φ = 8206155442348.

The previous prime is 8206155442279. The next prime is 8206155442351. The reversal of 8206155442349 is 9432445516028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8105693702500 + 100461739849 = 2847050^2 + 316957^2 .

It is a cyclic number.

It is not a de Polignac number, because 8206155442349 - 2¹⁶ = 8206155376813 is a prime.

It is a super-2 number, since 2×8206155442349² (a number of 27 digits) contains 22 as substring.

Together with 8206155442351, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8206155442349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8206155442649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4103077721174 + 4103077721175.

It is an arithmetic number, because the mean of its divisors is an integer number (4103077721175).

Almost surely, 2^{8206155442349} is an apocalyptic number.

It is an amenable number.

8206155442349 is a deficient number, since it is larger than the sum of its proper divisors (1).

8206155442349 is an equidigital number, since it uses as much as digits as its factorization.

8206155442349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8294400, while the sum is 53.

The spelling of 8206155442349 in words is "eight trillion, two hundred six billion, one hundred fifty-five million, four hundred forty-two thousand, three hundred forty-nine".