6766991112 has 128 divisors (see below), whose sum is σ = 19749484800. Its totient is φ = 1892352000.

The previous prime is 6766991111. The next prime is 6766991149. The reversal of 6766991112 is 2111996676.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6766991111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1507912 + ... + 1512392.

It is an arithmetic number, because the mean of its divisors is an integer number (154292850).

Almost surely, 2^6766991112 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 6766991112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9874742400).

6766991112 is an abundant number, since it is smaller than the sum of its proper divisors (12982493688).

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

6766991112 is a wasteful number, since it uses less digits than its factorization.

6766991112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687 (or 4683 counting only the distinct ones).

The product of its digits is 244944, while the sum is 48.

The square root of 6766991112 is about 82261.7232496378. The cubic root of 6766991112 is about 1891.4659839126.

The spelling of 6766991112 in words is "six billion, seven hundred sixty-six million, nine hundred ninety-one thousand, one hundred twelve".