6881550720 has 384 divisors, whose sum is σ = 25395552000. Its totient is φ = 1579438080.

The previous prime is 6881550719. The next prime is 6881550733. The reversal of 6881550720 is 270551886.

It is a tau number, because it is divible by the number of its divisors (384).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4413301 + ... + 4414859.

It is an arithmetic number, because the mean of its divisors is an integer number (66134250).

Almost surely, 2^6881550720 is an apocalyptic number.

6881550720 is a gapful number since it is divisible by the number (60) 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 6881550720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12697776000).

6881550720 is an abundant number, since it is smaller than the sum of its proper divisors (18514001280).

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

6881550720 is a wasteful number, since it uses less digits than its factorization.

6881550720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 6881550720 is about 82955.1126814978. The cubic root of 6881550720 is about 1902.0799678010.

The spelling of 6881550720 in words is "six billion, eight hundred eighty-one million, five hundred fifty thousand, seven hundred twenty".