77048657668 has 24 divisors (see below), whose sum is σ = 137206389600. Its totient is φ = 37847650368.

The previous prime is 77048657603. The next prime is 77048657669. The reversal of 77048657668 is 86675684077.

It is not an unprimeable number, because it can be changed into a prime (77048657669) 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 7 ways as a sum of consecutive naturals, for example, 278271 + ... + 481177.

It is an arithmetic number, because the mean of its divisors is an integer number (5716932900).

Almost surely, 2^77048657668 is an apocalyptic number.

It is an amenable number.

77048657668 is a deficient number, since it is larger than the sum of its proper divisors (60157731932).

77048657668 is a wasteful number, since it uses less digits than its factorization.

77048657668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204579 (or 204577 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 64.

The spelling of 77048657668 in words is "seventy-seven billion, forty-eight million, six hundred fifty-seven thousand, six hundred sixty-eight".