6405543441 has 24 divisors (see below), whose sum is σ = 10687326624. Its totient is φ = 3653784960.

The previous prime is 6405543409. The next prime is 6405543451. The reversal of 6405543441 is 1443455046.

6405543441 is a `hidden beast` number, since 64 + 0 + 554 + 3 + 4 + 41 = 666.

6405543441 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6405543441 - 2⁵ = 6405543409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6405543396 and 6405543405.

It is not an unprimeable number, because it can be changed into a prime (6405543451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1901331 + ... + 1904696.

It is an arithmetic number, because the mean of its divisors is an integer number (445305276).

Almost surely, 2^6405543441 is an apocalyptic number.

It is an amenable number.

6405543441 is a deficient number, since it is larger than the sum of its proper divisors (4281783183).

6405543441 is a wasteful number, since it uses less digits than its factorization.

6405543441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806061 (or 3806058 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 6405543441 is about 80034.6390071199. The cubic root of 6405543441 is about 1857.1714282060.

Adding to 6405543441 its reverse (1443455046), we get a palindrome (7848998487).

The spelling of 6405543441 in words is "six billion, four hundred five million, five hundred forty-three thousand, four hundred forty-one".