7839178722868 has 24 divisors (see below), whose sum is σ = 14446352511360. Its totient is φ = 3714776350560.

The previous prime is 7839178722857. The next prime is 7839178722967. The reversal of 7839178722868 is 8682278719387.

It is a super-2 number, since 2×7839178722868² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7839178722794 and 7839178722803.

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, 390854488 + ... + 390874543.

It is an arithmetic number, because the mean of its divisors is an integer number (601931354640).

Almost surely, 2^{7839178722868} is an apocalyptic number.

It is an amenable number.

7839178722868 is a deficient number, since it is larger than the sum of its proper divisors (6607173788492).

7839178722868 is a wasteful number, since it uses less digits than its factorization.

7839178722868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781729167 (or 781729165 counting only the distinct ones).

The product of its digits is 910393344, while the sum is 76.

The spelling of 7839178722868 in words is "seven trillion, eight hundred thirty-nine billion, one hundred seventy-eight million, seven hundred twenty-two thousand, eight hundred sixty-eight".