6541666044 has 24 divisors (see below), whose sum is σ = 15303751680. Its totient is φ = 2174860464.

The previous prime is 6541666037. The next prime is 6541666057. The reversal of 6541666044 is 4406661456.

It is a junction number, because it is equal to n+sod(n) for n = 6541665987 and 6541666005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707074 + ... + 716265.

It is an arithmetic number, because the mean of its divisors is an integer number (637656320).

Almost surely, 2^6541666044 is an apocalyptic number.

It is an amenable number.

6541666044 is an abundant number, since it is smaller than the sum of its proper divisors (8762085636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6541666044 is a wasteful number, since it uses less digits than its factorization.

6541666044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423729 (or 1423727 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 6541666044 is about 80880.5665410425. The cubic root of 6541666044 is about 1870.2347540987.

The spelling of 6541666044 in words is "six billion, five hundred forty-one million, six hundred sixty-six thousand, forty-four".