108938361052649 has 2 divisors, whose sum is σ = 108938361052650. Its totient is φ = 108938361052648.

The previous prime is 108938361052643. The next prime is 108938361052711. The reversal of 108938361052649 is 946250163839801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84972998886400 + 23965362166249 = 9218080^2 + 4895443^2 .

It is an emirp because it is prime and its reverse (946250163839801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108938361052649 - 2³² = 108934066085353 is a prime.

It is a super-4 number, since 4×108938361052649⁴ (a number of 57 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (108938361052643) 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, 54469180526324 + 54469180526325.

It is an arithmetic number, because the mean of its divisors is an integer number (54469180526325).

Almost surely, 2^{108938361052649} is an apocalyptic number.

It is an amenable number.

108938361052649 is a deficient number, since it is larger than the sum of its proper divisors (1).

108938361052649 is an equidigital number, since it uses as much as digits as its factorization.

108938361052649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 108938361052649 in words is "one hundred eight trillion, nine hundred thirty-eight billion, three hundred sixty-one million, fifty-two thousand, six hundred forty-nine".