766722596819 has 2 divisors, whose sum is σ = 766722596820. Its totient is φ = 766722596818.

The previous prime is 766722596807. The next prime is 766722596851. The reversal of 766722596819 is 918695227667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 766722596819 - 2¹⁶ = 766722531283 is a prime.

It is a super-2 number, since 2×766722596819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (766722506819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383361298409 + 383361298410.

It is an arithmetic number, because the mean of its divisors is an integer number (383361298410).

Almost surely, 2^766722596819 is an apocalyptic number.

766722596819 is a deficient number, since it is larger than the sum of its proper divisors (1).

766722596819 is an equidigital number, since it uses as much as digits as its factorization.

766722596819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 137168640, while the sum is 68.

The spelling of 766722596819 in words is "seven hundred sixty-six billion, seven hundred twenty-two million, five hundred ninety-six thousand, eight hundred nineteen".