6381822865 has 32 divisors (see below), whose sum is σ = 8933535360. Its totient is φ = 4324992000.

The previous prime is 6381822841. The next prime is 6381822871. The reversal of 6381822865 is 5682281836.

It is a de Polignac number, because none of the positive numbers 2^k-6381822865 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 60646 + ... + 128224.

It is an arithmetic number, because the mean of its divisors is an integer number (279172980).

Almost surely, 2^6381822865 is an apocalyptic number.

It is an amenable number.

6381822865 is a deficient number, since it is larger than the sum of its proper divisors (2551712495).

6381822865 is a wasteful number, since it uses less digits than its factorization.

6381822865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67713.

The product of its digits is 1105920, while the sum is 49.

The square root of 6381822865 is about 79886.3121254198. The cubic root of 6381822865 is about 1854.8761420052.

The spelling of 6381822865 in words is "six billion, three hundred eighty-one million, eight hundred twenty-two thousand, eight hundred sixty-five".