8121726803 has 2 divisors, whose sum is σ = 8121726804. Its totient is φ = 8121726802.

The previous prime is 8121726793. The next prime is 8121726841. The reversal of 8121726803 is 3086271218.

It is an a-pointer prime, because the next prime (8121726841) can be obtained adding 8121726803 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8121726803 - 2¹⁰ = 8121725779 is a prime.

It is not a weakly prime, because it can be changed into another prime (8121726103) 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, 4060863401 + 4060863402.

It is an arithmetic number, because the mean of its divisors is an integer number (4060863402).

Almost surely, 2^8121726803 is an apocalyptic number.

8121726803 is a deficient number, since it is larger than the sum of its proper divisors (1).

8121726803 is an equidigital number, since it uses as much as digits as its factorization.

8121726803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 8121726803 is about 90120.6236274472. The cubic root of 8121726803 is about 2010.0928814451.

The spelling of 8121726803 in words is "eight billion, one hundred twenty-one million, seven hundred twenty-six thousand, eight hundred three".