80808006649 has 2 divisors, whose sum is σ = 80808006650. Its totient is φ = 80808006648.

The previous prime is 80808006637. The next prime is 80808006707. The reversal of 80808006649 is 94660080808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71539131024 + 9268875625 = 267468^2 + 96275^2 .

It is a cyclic number.

It is not a de Polignac number, because 80808006649 - 2¹¹ = 80808004601 is a prime.

It is not a weakly prime, because it can be changed into another prime (80808006049) 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, 40404003324 + 40404003325.

It is an arithmetic number, because the mean of its divisors is an integer number (40404003325).

Almost surely, 2^80808006649 is an apocalyptic number.

It is an amenable number.

80808006649 is a deficient number, since it is larger than the sum of its proper divisors (1).

80808006649 is an equidigital number, since it uses as much as digits as its factorization.

80808006649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 80808006649 in words is "eighty billion, eight hundred eight million, six thousand, six hundred forty-nine".