77788668625648 has 40 divisors (see below), whose sum is σ = 150838331244800. Its totient is φ = 38862650093760.

The previous prime is 77788668625567. The next prime is 77788668625663. The reversal of 77788668625648 is 84652686688777.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651988303 + ... + 652107601.

It is an arithmetic number, because the mean of its divisors is an integer number (3770958281120).

Almost surely, 2^{77788668625648} is an apocalyptic number.

It is an amenable number.

77788668625648 is a deficient number, since it is larger than the sum of its proper divisors (73049662619152).

77788668625648 is a wasteful number, since it uses less digits than its factorization.

77788668625648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152165 (or 152159 counting only the distinct ones).

The product of its digits is 72831467520, while the sum is 88.

The spelling of 77788668625648 in words is "seventy-seven trillion, seven hundred eighty-eight billion, six hundred sixty-eight million, six hundred twenty-five thousand, six hundred forty-eight".