109855338075649 has 2 divisors, whose sum is σ = 109855338075650. Its totient is φ = 109855338075648.

The previous prime is 109855338075643. The next prime is 109855338075719. The reversal of 109855338075649 is 946570833558901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95506447107600 + 14348890968049 = 9772740^2 + 3787993^2 .

It is a cyclic number.

It is not a de Polignac number, because 109855338075649 - 2⁴¹ = 107656314820097 is a prime.

It is not a weakly prime, because it can be changed into another prime (109855338075643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54927669037824 + 54927669037825.

It is an arithmetic number, because the mean of its divisors is an integer number (54927669037825).

Almost surely, 2^{109855338075649} is an apocalyptic number.

It is an amenable number.

109855338075649 is a deficient number, since it is larger than the sum of its proper divisors (1).

109855338075649 is an equidigital number, since it uses as much as digits as its factorization.

109855338075649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776000, while the sum is 73.

The spelling of 109855338075649 in words is "one hundred nine trillion, eight hundred fifty-five billion, three hundred thirty-eight million, seventy-five thousand, six hundred forty-nine".