34878995849 has 2 divisors, whose sum is σ = 34878995850. Its totient is φ = 34878995848.

The previous prime is 34878995779. The next prime is 34878995857. The reversal of 34878995849 is 94859987843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32484655225 + 2394340624 = 180235^2 + 48932^2 .

It is a cyclic number.

It is not a de Polignac number, because 34878995849 - 2¹² = 34878991753 is a prime.

It is not a weakly prime, because it can be changed into another prime (34878997849) 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, 17439497924 + 17439497925.

It is an arithmetic number, because the mean of its divisors is an integer number (17439497925).

Almost surely, 2^34878995849 is an apocalyptic number.

It is an amenable number.

34878995849 is a deficient number, since it is larger than the sum of its proper divisors (1).

34878995849 is an equidigital number, since it uses as much as digits as its factorization.

34878995849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 627056640, while the sum is 74.

The spelling of 34878995849 in words is "thirty-four billion, eight hundred seventy-eight million, nine hundred ninety-five thousand, eight hundred forty-nine".