7684986894868 has 12 divisors (see below), whose sum is σ = 13448820196980. Its totient is φ = 3842466838592.

The previous prime is 7684986894817. The next prime is 7684986894881. The reversal of 7684986894868 is 8684986894867.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4096584096004 + 3588402798864 = 2024002^2 + 1894308^2 .

It is a congruent number.

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, 5995171 + ... + 7163242.

It is an arithmetic number, because the mean of its divisors is an integer number (1120735016415).

Almost surely, 2^{7684986894868} is an apocalyptic number.

It is an amenable number.

7684986894868 is a deficient number, since it is larger than the sum of its proper divisors (5763833302112).

7684986894868 is a wasteful number, since it uses less digits than its factorization.

7684986894868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13304426 (or 13304424 counting only the distinct ones).

The product of its digits is 64210599936, while the sum is 91.

Subtracting 7684986894868 from its reverse (8684986894867), we obtain a palindrome (999999999999).

The spelling of 7684986894868 in words is "seven trillion, six hundred eighty-four billion, nine hundred eighty-six million, eight hundred ninety-four thousand, eight hundred sixty-eight".