6540655143 has 8 divisors (see below), whose sum is σ = 9513680256. Its totient is φ = 3964033400.

The previous prime is 6540655141. The next prime is 6540655169. The reversal of 6540655143 is 3415560456.

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 6540655143 - 2¹ = 6540655141 is a prime.

It is a super-3 number, since 3×6540655143³ (a number of 30 digits) contains 333 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99100803 + ... + 99100868.

It is an arithmetic number, because the mean of its divisors is an integer number (1189210032).

Almost surely, 2^6540655143 is an apocalyptic number.

6540655143 is a deficient number, since it is larger than the sum of its proper divisors (2973025113).

6540655143 is a wasteful number, since it uses less digits than its factorization.

6540655143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198201685.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 6540655143 is about 80874.3169553845. The cubic root of 6540655143 is about 1870.1384116906.

The spelling of 6540655143 in words is "six billion, five hundred forty million, six hundred fifty-five thousand, one hundred forty-three".