6541249667 has 8 divisors (see below), whose sum is σ = 6634827360. Its totient is φ = 6447712320.

The previous prime is 6541249651. The next prime is 6541249697. The reversal of 6541249667 is 7669421456.

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 6541249667 - 2⁴ = 6541249651 is a prime.

It is a super-2 number, since 2×6541249667² = 85575894412055221778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541249697) 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, 495383 + ... + 508415.

It is an arithmetic number, because the mean of its divisors is an integer number (829353420).

Almost surely, 2^6541249667 is an apocalyptic number.

6541249667 is a deficient number, since it is larger than the sum of its proper divisors (93577693).

6541249667 is a wasteful number, since it uses less digits than its factorization.

6541249667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20173.

The product of its digits is 2177280, while the sum is 50.

The square root of 6541249667 is about 80877.9924763220. The cubic root of 6541249667 is about 1870.1950731136.

The spelling of 6541249667 in words is "six billion, five hundred forty-one million, two hundred forty-nine thousand, six hundred sixty-seven".