77091636368 has 40 divisors (see below), whose sum is σ = 151208322048. Its totient is φ = 38070403712.

The previous prime is 77091636341. The next prime is 77091636373. The reversal of 77091636368 is 86363619077.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6470705 + ... + 6482607.

Almost surely, 2^77091636368 is an apocalyptic number.

It is an amenable number.

77091636368 is a deficient number, since it is larger than the sum of its proper divisors (74116685680).

77091636368 is a wasteful number, since it uses less digits than its factorization.

77091636368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16871 (or 16865 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 77091636368 in words is "seventy-seven billion, ninety-one million, six hundred thirty-six thousand, three hundred sixty-eight".