6681478050 has 192 divisors, whose sum is σ = 20468689920. Its totient is φ = 1591488000.

The previous prime is 6681478021. The next prime is 6681478087. The reversal of 6681478050 is 508741866.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 6681477987 and 6681478005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 537910 + ... + 550190.

It is an arithmetic number, because the mean of its divisors is an integer number (106607760).

Almost surely, 2^6681478050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6681478050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10234344960).

6681478050 is an abundant number, since it is smaller than the sum of its proper divisors (13787211870).

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

6681478050 is a wasteful number, since it uses less digits than its factorization.

6681478050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12346 (or 12335 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 6681478050 is about 81740.3085998579. The cubic root of 6681478050 is about 1883.4648313610.

The spelling of 6681478050 in words is "six billion, six hundred eighty-one million, four hundred seventy-eight thousand, fifty".