6541042511 has 4 divisors (see below), whose sum is σ = 6558579192. Its totient is φ = 6523505832.

The previous prime is 6541042441. The next prime is 6541042513. The reversal of 6541042511 is 1152401456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6541042511 - 2³⁰ = 5467300687 is a prime.

It is a super-3 number, since 3×6541042511³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541042513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8767781 + ... + 8768526.

It is an arithmetic number, because the mean of its divisors is an integer number (1639644798).

Almost surely, 2^6541042511 is an apocalyptic number.

6541042511 is a deficient number, since it is larger than the sum of its proper divisors (17536681).

6541042511 is a wasteful number, since it uses less digits than its factorization.

6541042511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17536680.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 6541042511 is about 80876.7117964127. The cubic root of 6541042511 is about 1870.1753303916.

Adding to 6541042511 its reverse (1152401456), we get a palindrome (7693443967).

The spelling of 6541042511 in words is "six billion, five hundred forty-one million, forty-two thousand, five hundred eleven".