8128051447 has 2 divisors, whose sum is σ = 8128051448. Its totient is φ = 8128051446.

The previous prime is 8128051429. The next prime is 8128051471. The reversal of 8128051447 is 7441508218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8128051447 - 2¹⁹ = 8127527159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8128051247) 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, 4064025723 + 4064025724.

It is an arithmetic number, because the mean of its divisors is an integer number (4064025724).

Almost surely, 2^8128051447 is an apocalyptic number.

8128051447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8128051447 is an equidigital number, since it uses as much as digits as its factorization.

8128051447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 8128051447 is about 90155.7066801653. The cubic root of 8128051447 is about 2010.6145202370.

The spelling of 8128051447 in words is "eight billion, one hundred twenty-eight million, fifty-one thousand, four hundred forty-seven".