6540000005 has 32 divisors (see below), whose sum is σ = 9790329600. Its totient is φ = 4074462720.

The previous prime is 6539999969. The next prime is 6540000017. The reversal of 6540000005 is 5000000456.

It is not a de Polignac number, because 6540000005 - 2²⁴ = 6523222789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 818771 + ... + 826719.

It is an arithmetic number, because the mean of its divisors is an integer number (305947800).

Almost surely, 2^6540000005 is an apocalyptic number.

It is an amenable number.

6540000005 is a deficient number, since it is larger than the sum of its proper divisors (3250329595).

6540000005 is a wasteful number, since it uses less digits than its factorization.

6540000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 6540000005 is about 80870.2665075366. The cubic root of 6540000005 is about 1870.0759694417.

The spelling of 6540000005 in words is "six billion, five hundred forty million, five", and thus it is an aban number.