77766673344 has 28 divisors (see below), whose sum is σ = 205757657064. Its totient is φ = 25922224384.

The previous prime is 77766673343. The next prime is 77766673351. The reversal of 77766673344 is 44337666777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77766673343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202517187 + ... + 202517570.

Almost surely, 2^77766673344 is an apocalyptic number.

It is an amenable number.

77766673344 is an abundant number, since it is smaller than the sum of its proper divisors (127990983720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77766673344 is a wasteful number, since it uses less digits than its factorization.

77766673344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405034772 (or 405034762 counting only the distinct ones).

The product of its digits is 74680704, while the sum is 60.

It can be divided in two parts, 777666733 and 44, that added together give a palindrome (777666777).

The spelling of 77766673344 in words is "seventy-seven billion, seven hundred sixty-six million, six hundred seventy-three thousand, three hundred forty-four".