6541122539 has 8 divisors (see below), whose sum is σ = 7482005760. Its totient is φ = 5601848616.

The previous prime is 6541122527. The next prime is 6541122569. The reversal of 6541122539 is 9352211456.

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

It is a de Polignac number, because none of the positive numbers 2^k-6541122539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541122569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393599 + ... + 409880.

It is an arithmetic number, because the mean of its divisors is an integer number (935250720).

Almost surely, 2^6541122539 is an apocalyptic number.

6541122539 is a deficient number, since it is larger than the sum of its proper divisors (940883221).

6541122539 is a wasteful number, since it uses less digits than its factorization.

6541122539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804649.

The product of its digits is 64800, while the sum is 38.

The square root of 6541122539 is about 80877.2065479514. The cubic root of 6541122539 is about 1870.1829574011.

The spelling of 6541122539 in words is "six billion, five hundred forty-one million, one hundred twenty-two thousand, five hundred thirty-nine".