6447082641 has 16 divisors (see below), whose sum is σ = 9050280000. Its totient is φ = 4071057408.

The previous prime is 6447082627. The next prime is 6447082661. The reversal of 6447082641 is 1462807446.

It is not a de Polignac number, because 6447082641 - 2⁷ = 6447082513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6447082593 and 6447082602.

It is not an unprimeable number, because it can be changed into a prime (6447082661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479985 + ... + 493233.

It is an arithmetic number, because the mean of its divisors is an integer number (565642500).

Almost surely, 2^6447082641 is an apocalyptic number.

It is an amenable number.

6447082641 is a deficient number, since it is larger than the sum of its proper divisors (2603197359).

6447082641 is a wasteful number, since it uses less digits than its factorization.

6447082641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21808.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 6447082641 is about 80293.7272830201. The cubic root of 6447082641 is about 1861.1772946161.

The spelling of 6447082641 in words is "six billion, four hundred forty-seven million, eighty-two thousand, six hundred forty-one".