8478749130829 has 2 divisors, whose sum is σ = 8478749130830. Its totient is φ = 8478749130828.

The previous prime is 8478749130799. The next prime is 8478749130893. The reversal of 8478749130829 is 9280319478748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7169274002500 + 1309475128329 = 2677550^2 + 1144323^2 .

It is a cyclic number.

It is not a de Polignac number, because 8478749130829 - 2⁹ = 8478749130317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8478749430829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4239374565414 + 4239374565415.

It is an arithmetic number, because the mean of its divisors is an integer number (4239374565415).

Almost surely, 2^{8478749130829} is an apocalyptic number.

It is an amenable number.

8478749130829 is a deficient number, since it is larger than the sum of its proper divisors (1).

8478749130829 is an equidigital number, since it uses as much as digits as its factorization.

8478749130829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 195084288, while the sum is 70.

The spelling of 8478749130829 in words is "eight trillion, four hundred seventy-eight billion, seven hundred forty-nine million, one hundred thirty thousand, eight hundred twenty-nine".