7756080640 has 480 divisors, whose sum is σ = 24164078400. Its totient is φ = 2384363520.

The previous prime is 7756080601. The next prime is 7756080679. The reversal of 7756080640 is 460806577.

It is an interprime number because it is at equal distance from previous prime (7756080601) and next prime (7756080679).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 106247644 + ... + 106247716.

It is an arithmetic number, because the mean of its divisors is an integer number (50341830).

Almost surely, 2^7756080640 is an apocalyptic number.

7756080640 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 7756080640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12082039200).

7756080640 is an abundant number, since it is smaller than the sum of its proper divisors (16407997760).

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

7756080640 is an equidigital number, since it uses as much as digits as its factorization.

7756080640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 7756080640 is about 88068.6132512600. The cubic root of 7756080640 is about 1979.4632289820.

The spelling of 7756080640 in words is "seven billion, seven hundred fifty-six million, eighty thousand, six hundred forty".