6783109680 has 80 divisors (see below), whose sum is σ = 21075436800. Its totient is φ = 1804717824.

The previous prime is 6783109651. The next prime is 6783109709. The reversal of 6783109680 is 869013876.

It is an interprime number because it is at equal distance from previous prime (6783109651) and next prime (6783109709).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74421 + ... + 138219.

It is an arithmetic number, because the mean of its divisors is an integer number (263442960).

Almost surely, 2^6783109680 is an apocalyptic number.

6783109680 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 6783109680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10537718400).

6783109680 is an abundant number, since it is smaller than the sum of its proper divisors (14292327120).

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

6783109680 is a wasteful number, since it uses less digits than its factorization.

6783109680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64258 (or 64252 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 6783109680 is about 82359.6362303768. The cubic root of 6783109680 is about 1892.9665793725.

The spelling of 6783109680 in words is "six billion, seven hundred eighty-three million, one hundred nine thousand, six hundred eighty".