8078753778556 has 12 divisors (see below), whose sum is σ = 14138362701568. Its totient is φ = 4039221578112.

The previous prime is 8078753778547. The next prime is 8078753778611. The reversal of 8078753778556 is 6558773578708.

It is a super-2 number, since 2×8078753778556² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38710716 + ... + 38918851.

Almost surely, 2^{8078753778556} is an apocalyptic number.

It is an amenable number.

8078753778556 is a deficient number, since it is larger than the sum of its proper divisors (6059608923012).

8078753778556 is a wasteful number, since it uses less digits than its factorization.

8078753778556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77655588 (or 77655586 counting only the distinct ones).

The product of its (nonzero) digits is 2765952000, while the sum is 76.

The spelling of 8078753778556 in words is "eight trillion, seventy-eight billion, seven hundred fifty-three million, seven hundred seventy-eight thousand, five hundred fifty-six".