6645791141 has 8 divisors (see below), whose sum is σ = 7255030464. Its totient is φ = 6037397920.

The previous prime is 6645791111. The next prime is 6645791161. The reversal of 6645791141 is 1411975466.

It is a happy number.

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 6645791141 - 2¹⁰ = 6645790117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6645791092 and 6645791101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645791111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195041 + ... + 226566.

It is an arithmetic number, because the mean of its divisors is an integer number (906878808).

Almost surely, 2^6645791141 is an apocalyptic number.

It is an amenable number.

6645791141 is a deficient number, since it is larger than the sum of its proper divisors (609239323).

6645791141 is a wasteful number, since it uses less digits than its factorization.

6645791141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423051.

The product of its digits is 181440, while the sum is 44.

The square root of 6645791141 is about 81521.7218966822. The cubic root of 6645791141 is about 1880.1055415511.

The spelling of 6645791141 in words is "six billion, six hundred forty-five million, seven hundred ninety-one thousand, one hundred forty-one".