6540655142 has 24 divisors (see below), whose sum is σ = 11550293496. Its totient is φ = 2769361728.

The previous prime is 6540655141. The next prime is 6540655169. The reversal of 6540655142 is 2415560456.

It is a junction number, because it is equal to n+sod(n) for n = 6540655096 and 6540655105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540655141) 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 11 ways as a sum of consecutive naturals, for example, 393923 + ... + 410190.

It is an arithmetic number, because the mean of its divisors is an integer number (481262229).

Almost surely, 2^6540655142 is an apocalyptic number.

6540655142 is a deficient number, since it is larger than the sum of its proper divisors (5009638354).

6540655142 is a wasteful number, since it uses less digits than its factorization.

6540655142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804212 (or 804205 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 6540655142 is about 80874.3169492021. The cubic root of 6540655142 is about 1870.1384115952.

The spelling of 6540655142 in words is "six billion, five hundred forty million, six hundred fifty-five thousand, one hundred forty-two".