6541235005 has 8 divisors (see below), whose sum is σ = 7883760600. Its totient is φ = 5210135616.

The previous prime is 6541234967. The next prime is 6541235009. The reversal of 6541235005 is 5005321456.

It can be written as a sum of positive squares in 4 ways, for example, as 347859801 + 6193375204 = 18651^2 + 78698^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6541235005 - 2⁷ = 6541234877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541235009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2855290 + ... + 2857579.

It is an arithmetic number, because the mean of its divisors is an integer number (985470075).

Almost surely, 2^6541235005 is an apocalyptic number.

It is an amenable number.

6541235005 is a deficient number, since it is larger than the sum of its proper divisors (1342525595).

6541235005 is a wasteful number, since it uses less digits than its factorization.

6541235005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5713103.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 6541235005 is about 80877.9018335664. The cubic root of 6541235005 is about 1870.1936757852.

The spelling of 6541235005 in words is "six billion, five hundred forty-one million, two hundred thirty-five thousand, five".