77686560385336 has 48 divisors (see below), whose sum is σ = 169445562120000. Its totient is φ = 33293913738624.

The previous prime is 77686560385333. The next prime is 77686560385403. The reversal of 77686560385336 is 63358306568677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77686560385333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41418100 + ... + 43253116.

It is an arithmetic number, because the mean of its divisors is an integer number (3530115877500).

Almost surely, 2^{77686560385336} is an apocalyptic number.

It is an amenable number.

77686560385336 is an abundant number, since it is smaller than the sum of its proper divisors (91759001734664).

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

77686560385336 is a wasteful number, since it uses less digits than its factorization.

77686560385336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943036 (or 1943025 counting only the distinct ones).

The product of its (nonzero) digits is 2743372800, while the sum is 73.

The spelling of 77686560385336 in words is "seventy-seven trillion, six hundred eighty-six billion, five hundred sixty million, three hundred eighty-five thousand, three hundred thirty-six".