776605879823 has 2 divisors, whose sum is σ = 776605879824. Its totient is φ = 776605879822.

The previous prime is 776605879807. The next prime is 776605879909. The reversal of 776605879823 is 328978506677.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 776605879823 - 2⁴ = 776605879807 is a prime.

It is a super-2 number, since 2×776605879823² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (776605878823) 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, 388302939911 + 388302939912.

It is an arithmetic number, because the mean of its divisors is an integer number (388302939912).

Almost surely, 2^776605879823 is an apocalyptic number.

776605879823 is a deficient number, since it is larger than the sum of its proper divisors (1).

776605879823 is an equidigital number, since it uses as much as digits as its factorization.

776605879823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 213373440, while the sum is 68.

The spelling of 776605879823 in words is "seven hundred seventy-six billion, six hundred five million, eight hundred seventy-nine thousand, eight hundred twenty-three".