7778105668612 has 12 divisors (see below), whose sum is σ = 13842391444560. Its totient is φ = 3823136684456.

The previous prime is 7778105668607. The next prime is 7778105668631. The reversal of 7778105668612 is 2168665018777.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16479037198 + ... + 16479037669.

It is an arithmetic number, because the mean of its divisors is an integer number (1153532620380).

Almost surely, 2^{7778105668612} is an apocalyptic number.

It is an amenable number.

7778105668612 is a deficient number, since it is larger than the sum of its proper divisors (6064285775948).

7778105668612 is a wasteful number, since it uses less digits than its factorization.

7778105668612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32958074930 (or 32958074928 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 64.

The spelling of 7778105668612 in words is "seven trillion, seven hundred seventy-eight billion, one hundred five million, six hundred sixty-eight thousand, six hundred twelve".