773864689769 has 2 divisors, whose sum is σ = 773864689770. Its totient is φ = 773864689768.

The previous prime is 773864689723. The next prime is 773864689781. The reversal of 773864689769 is 967986468377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400830804544 + 373033885225 = 633112^2 + 610765^2 .

It is a cyclic number.

It is not a de Polignac number, because 773864689769 - 2²⁰ = 773863641193 is a prime.

It is a super-2 number, since 2×773864689769² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 773864689693 and 773864689702.

It is not a weakly prime, because it can be changed into another prime (773864689789) 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, 386932344884 + 386932344885.

It is an arithmetic number, because the mean of its divisors is an integer number (386932344885).

Almost surely, 2^773864689769 is an apocalyptic number.

It is an amenable number.

773864689769 is a deficient number, since it is larger than the sum of its proper divisors (1).

773864689769 is an equidigital number, since it uses as much as digits as its factorization.

773864689769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608866304, while the sum is 80.

The spelling of 773864689769 in words is "seven hundred seventy-three billion, eight hundred sixty-four million, six hundred eighty-nine thousand, seven hundred sixty-nine".