76766362009 has 2 divisors, whose sum is σ = 76766362010. Its totient is φ = 76766362008.

The previous prime is 76766361949. The next prime is 76766362027. The reversal of 76766362009 is 90026366767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74854224025 + 1912137984 = 273595^2 + 43728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76766362009 is a prime.

It is not a weakly prime, because it can be changed into another prime (76766362039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38383181004 + 38383181005.

It is an arithmetic number, because the mean of its divisors is an integer number (38383181005).

Almost surely, 2^76766362009 is an apocalyptic number.

It is an amenable number.

76766362009 is a deficient number, since it is larger than the sum of its proper divisors (1).

76766362009 is an equidigital number, since it uses as much as digits as its factorization.

76766362009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 52.

The spelling of 76766362009 in words is "seventy-six billion, seven hundred sixty-six million, three hundred sixty-two thousand, nine".