6787779411968 has 120 divisors (see below), whose sum is σ = 13869770944512. Its totient is φ = 3320966283264.

The previous prime is 6787779411967. The next prime is 6787779412013. The reversal of 6787779411968 is 8691149777876.

It is a junction number, because it is equal to n+sod(n) for n = 6787779411892 and 6787779411901.

It is not an unprimeable number, because it can be changed into a prime (6787779411967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151873721 + ... + 151918407.

Almost surely, 2^{6787779411968} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6787779411968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6934885472256).

6787779411968 is an abundant number, since it is smaller than the sum of its proper divisors (7081991532544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6787779411968 is an equidigital number, since it uses as much as digits as its factorization.

6787779411968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44915 (or 44889 counting only the distinct ones).

The product of its digits is 1792336896, while the sum is 80.

The spelling of 6787779411968 in words is "six trillion, seven hundred eighty-seven billion, seven hundred seventy-nine million, four hundred eleven thousand, nine hundred sixty-eight".