76802210909 has 2 divisors, whose sum is σ = 76802210910. Its totient is φ = 76802210908.

The previous prime is 76802210843. The next prime is 76802210917. The reversal of 76802210909 is 90901220867.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73006418809 + 3795792100 = 270197^2 + 61610^2 .

It is a cyclic number.

It is not a de Polignac number, because 76802210909 - 2¹² = 76802206813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76802210909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76802215909) 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, 38401105454 + 38401105455.

It is an arithmetic number, because the mean of its divisors is an integer number (38401105455).

Almost surely, 2^76802210909 is an apocalyptic number.

It is an amenable number.

76802210909 is a deficient number, since it is larger than the sum of its proper divisors (1).

76802210909 is an equidigital number, since it uses as much as digits as its factorization.

76802210909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The spelling of 76802210909 in words is "seventy-six billion, eight hundred two million, two hundred ten thousand, nine hundred nine".