7766347680 has 864 divisors, whose sum is σ = 33841027584. Its totient is φ = 1587216384.

The previous prime is 7766347663. The next prime is 7766347741. The reversal of 7766347680 is 867436677.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 80065392 + ... + 80065488.

It is an arithmetic number, because the mean of its divisors is an integer number (39167856).

Almost surely, 2^7766347680 is an apocalyptic number.

7766347680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7766347680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16920513792).

7766347680 is an abundant number, since it is smaller than the sum of its proper divisors (26074679904).

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

7766347680 is a wasteful number, since it uses less digits than its factorization.

7766347680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The square root of 7766347680 is about 88126.8839798617. The cubic root of 7766347680 is about 1980.3362759121.

The spelling of 7766347680 in words is "seven billion, seven hundred sixty-six million, three hundred forty-seven thousand, six hundred eighty".