6381945751875 has 20 divisors (see below), whose sum is σ = 10633172551848. Its totient is φ = 3403704400000.

The previous prime is 6381945751873. The next prime is 6381945751889. The reversal of 6381945751875 is 5781575491836.

It is not a de Polignac number, because 6381945751875 - 2¹ = 6381945751873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6381945751873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1701850326 + ... + 1701854075.

Almost surely, 2^{6381945751875} is an apocalyptic number.

6381945751875 is a deficient number, since it is larger than the sum of its proper divisors (4251226799973).

6381945751875 is an equidigital number, since it uses as much as digits as its factorization.

6381945751875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403704424 (or 3403704409 counting only the distinct ones).

The product of its digits is 254016000, while the sum is 69.

The spelling of 6381945751875 in words is "six trillion, three hundred eighty-one billion, nine hundred forty-five million, seven hundred fifty-one thousand, eight hundred seventy-five".