7789738379876 has 12 divisors (see below), whose sum is σ = 13632061991100. Its totient is φ = 3894863525280.

The previous prime is 7789738379869. The next prime is 7789738379881. The reversal of 7789738379876 is 6789738379877.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2776975613476 + 5012762766400 = 1666426^2 + 2238920^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7789738379791 and 7789738379800.

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, 3872006 + ... + 5529186.

It is an arithmetic number, because the mean of its divisors is an integer number (1136005165925).

Almost surely, 2^{7789738379876} is an apocalyptic number.

It is an amenable number.

7789738379876 is a deficient number, since it is larger than the sum of its proper divisors (5842323611224).

7789738379876 is a wasteful number, since it uses less digits than its factorization.

7789738379876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832334 (or 2832332 counting only the distinct ones).

The product of its digits is 37639074816, while the sum is 89.

Subtracting from 7789738379876 its reverse (6789738379877), we obtain a palindrome (999999999999).

The spelling of 7789738379876 in words is "seven trillion, seven hundred eighty-nine billion, seven hundred thirty-eight million, three hundred seventy-nine thousand, eight hundred seventy-six".