77682516813 has 48 divisors (see below), whose sum is σ = 128861725824. Its totient is φ = 44634670080.

The previous prime is 77682516803. The next prime is 77682516817. The reversal of 77682516813 is 31861528677.

It is a happy number.

It is not a de Polignac number, because 77682516813 - 2¹³ = 77682508621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77682516813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77682516817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106345 + ... + 408257.

It is an arithmetic number, because the mean of its divisors is an integer number (2684619288).

Almost surely, 2^77682516813 is an apocalyptic number.

It is an amenable number.

77682516813 is a deficient number, since it is larger than the sum of its proper divisors (51179209011).

77682516813 is a wasteful number, since it uses less digits than its factorization.

77682516813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302066 (or 302063 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

It can be divided in two parts, 77682 and 516813, that added together give a palindrome (594495).

The spelling of 77682516813 in words is "seventy-seven billion, six hundred eighty-two million, five hundred sixteen thousand, eight hundred thirteen".