8446021641 has 48 divisors (see below), whose sum is σ = 12779020800. Its totient is φ = 5369345280.

The previous prime is 8446021609. The next prime is 8446021673. The reversal of 8446021641 is 1461206448.

It is a happy number.

8446021641 is a `hidden beast` number, since 8 + 4 + 4 + 6 + 0 + 2 + 1 + 641 = 666.

It is an interprime number because it is at equal distance from previous prime (8446021609) and next prime (8446021673).

It is not a de Polignac number, because 8446021641 - 2⁵ = 8446021609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8446021596 and 8446021605.

It is not an unprimeable number, because it can be changed into a prime (8446021841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5694486 + ... + 5695968.

It is an arithmetic number, because the mean of its divisors is an integer number (266229600).

Almost surely, 2^8446021641 is an apocalyptic number.

It is an amenable number.

8446021641 is a deficient number, since it is larger than the sum of its proper divisors (4332999159).

8446021641 is a wasteful number, since it uses less digits than its factorization.

8446021641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1803 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 8446021641 is about 91902.2395864214. The cubic root of 8446021641 is about 2036.4983534683.

The spelling of 8446021641 in words is "eight billion, four hundred forty-six million, twenty-one thousand, six hundred forty-one".