6539838543 has 12 divisors (see below), whose sum is σ = 10795924048. Its totient is φ = 3737050560.

The previous prime is 6539838533. The next prime is 6539838581. The reversal of 6539838543 is 3458389356.

It is a happy number.

6539838543 is a `hidden beast` number, since 6 + 5 + 3 + 98 + 3 + 8 + 543 = 666.

It is not a de Polignac number, because 6539838543 - 2⁴ = 6539838527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6539838543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539838533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51903418 + ... + 51903543.

Almost surely, 2^6539838543 is an apocalyptic number.

6539838543 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6539838543 is a deficient number, since it is larger than the sum of its proper divisors (4256085505).

6539838543 is a wasteful number, since it uses less digits than its factorization.

6539838543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103806974 (or 103806971 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The square root of 6539838543 is about 80869.2682234729. The cubic root of 6539838543 is about 1870.0605796002.

The spelling of 6539838543 in words is "six billion, five hundred thirty-nine million, eight hundred thirty-eight thousand, five hundred forty-three".