765345565949 has 2 divisors, whose sum is σ = 765345565950. Its totient is φ = 765345565948.

The previous prime is 765345565937. The next prime is 765345565973. The reversal of 765345565949 is 949565543567.

765345565949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500192661049 + 265152904900 = 707243^2 + 514930^2 .

It is a cyclic number.

It is not a de Polignac number, because 765345565949 - 2²⁰ = 765344517373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765345565349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382672782974 + 382672782975.

It is an arithmetic number, because the mean of its divisors is an integer number (382672782975).

Almost surely, 2^765345565949 is an apocalyptic number.

It is an amenable number.

765345565949 is a deficient number, since it is larger than the sum of its proper divisors (1).

765345565949 is an equidigital number, since it uses as much as digits as its factorization.

765345565949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360000, while the sum is 68.

The spelling of 765345565949 in words is "seven hundred sixty-five billion, three hundred forty-five million, five hundred sixty-five thousand, nine hundred forty-nine".