6540943003 has 8 divisors (see below), whose sum is σ = 7547940608. Its totient is φ = 5552089704.

The previous prime is 6540942977. The next prime is 6540943027. The reversal of 6540943003 is 3003490456.

It is a happy number.

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

It is not a de Polignac number, because 6540943003 - 2¹³ = 6540934811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6540943003.

It is not an unprimeable number, because it can be changed into a prime (6540943033) 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, 4535301 + ... + 4536742.

It is an arithmetic number, because the mean of its divisors is an integer number (943492576).

Almost surely, 2^6540943003 is an apocalyptic number.

6540943003 is a deficient number, since it is larger than the sum of its proper divisors (1006997605).

6540943003 is a wasteful number, since it uses less digits than its factorization.

6540943003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9072153.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 6540943003 is about 80876.0966108034. The cubic root of 6540943003 is about 1870.1658467682.

The spelling of 6540943003 in words is "six billion, five hundred forty million, nine hundred forty-three thousand, three".