10078047821 has 2 divisors, whose sum is σ = 10078047822. Its totient is φ = 10078047820.

The previous prime is 10078047779. The next prime is 10078047871. The reversal of 10078047821 is 12874087001.

10078047821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9501375625 + 576672196 = 97475^2 + 24014^2 .

It is an emirp because it is prime and its reverse (12874087001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10078047821 - 2⁶ = 10078047757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10078047871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5039023910 + 5039023911.

It is an arithmetic number, because the mean of its divisors is an integer number (5039023911).

Almost surely, 2^10078047821 is an apocalyptic number.

It is an amenable number.

10078047821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10078047821 is an equidigital number, since it uses as much as digits as its factorization.

10078047821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 38.

The spelling of 10078047821 in words is "ten billion, seventy-eight million, forty-seven thousand, eight hundred twenty-one".