6813738880 has 64 divisors (see below), whose sum is σ = 17542123200. Its totient is φ = 2515838976.

The previous prime is 6813738871. The next prime is 6813738887. The reversal of 6813738880 is 888373186.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813738887) 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 7 ways as a sum of consecutive naturals, for example, 401160 + ... + 417799.

It is an arithmetic number, because the mean of its divisors is an integer number (274095675).

Almost surely, 2^6813738880 is an apocalyptic number.

It is an amenable number.

6813738880 is an abundant number, since it is smaller than the sum of its proper divisors (10728384320).

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

6813738880 is a wasteful number, since it uses less digits than its factorization.

6813738880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818991 (or 818979 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 6813738880 is about 82545.3746735697. The cubic root of 6813738880 is about 1895.8115380575.

The spelling of 6813738880 in words is "six billion, eight hundred thirteen million, seven hundred thirty-eight thousand, eight hundred eighty".