7665338880 has 160 divisors (see below), whose sum is σ = 27228168000. Its totient is φ = 2044071936.

The previous prime is 7665338861. The next prime is 7665338917. The reversal of 7665338880 is 888335667.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 13671 + ... + 124569.

It is an arithmetic number, because the mean of its divisors is an integer number (170176050).

Almost surely, 2^7665338880 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 7665338880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13614084000).

7665338880 is an abundant number, since it is smaller than the sum of its proper divisors (19562829120).

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

7665338880 is a wasteful number, since it uses less digits than its factorization.

7665338880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110931 (or 110909 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 7665338880 is about 87551.9210525960. The cubic root of 7665338880 is about 1971.7133933610.

The spelling of 7665338880 in words is "seven billion, six hundred sixty-five million, three hundred thirty-eight thousand, eight hundred eighty".