766773667444 has 6 divisors (see below), whose sum is σ = 1341853918034. Its totient is φ = 383386833720.

The previous prime is 766773667441. The next prime is 766773667453. The reversal of 766773667444 is 444766377667.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 726139171044 + 40634496400 = 852138^2 + 201580^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 766773667444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766773667441) 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, 95846708427 + ... + 95846708434.

Almost surely, 2^766773667444 is an apocalyptic number.

It is an amenable number.

766773667444 is a deficient number, since it is larger than the sum of its proper divisors (575080250590).

766773667444 is a wasteful number, since it uses less digits than its factorization.

766773667444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191693416865 (or 191693416863 counting only the distinct ones).

The product of its digits is 597445632, while the sum is 67.

The spelling of 766773667444 in words is "seven hundred sixty-six billion, seven hundred seventy-three million, six hundred sixty-seven thousand, four hundred forty-four".