6681125838 has 32 divisors (see below), whose sum is σ = 14127004800. Its totient is φ = 2100607776.

The previous prime is 6681125777. The next prime is 6681125881. The reversal of 6681125838 is 8385211866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101856 + ... + 154067.

It is an arithmetic number, because the mean of its divisors is an integer number (441468900).

Almost surely, 2^6681125838 is an apocalyptic number.

6681125838 is an abundant number, since it is smaller than the sum of its proper divisors (7445878962).

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

6681125838 is a wasteful number, since it uses less digits than its factorization.

6681125838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256176.

The product of its digits is 552960, while the sum is 48.

The square root of 6681125838 is about 81738.1541142201. The cubic root of 6681125838 is about 1883.4317353620.

The spelling of 6681125838 in words is "six billion, six hundred eighty-one million, one hundred twenty-five thousand, eight hundred thirty-eight".