765786550066 has 16 divisors (see below), whose sum is σ = 1157137898904. Its totient is φ = 380078734464.

The previous prime is 765786550063. The next prime is 765786550079. The reversal of 765786550066 is 660055687567.

It can be written as a sum of positive squares in 4 ways, for example, as 343137036841 + 422649513225 = 585779^2 + 650115^2 .

It is a junction number, because it is equal to n+sod(n) for n = 765786549986 and 765786550013.

It is not an unprimeable number, because it can be changed into a prime (765786550063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 885675 + ... + 1521838.

Almost surely, 2^765786550066 is an apocalyptic number.

765786550066 is a deficient number, since it is larger than the sum of its proper divisors (391351348838).

765786550066 is a wasteful number, since it uses less digits than its factorization.

765786550066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408685.

The product of its (nonzero) digits is 63504000, while the sum is 61.

The spelling of 765786550066 in words is "seven hundred sixty-five billion, seven hundred eighty-six million, five hundred fifty thousand, sixty-six".