6539545709842 has 8 divisors (see below), whose sum is σ = 9809963239356. Its totient is φ = 3269557963392.

The previous prime is 6539545709821. The next prime is 6539545709863. The reversal of 6539545709842 is 2489075459356.

It is an interprime number because it is at equal distance from previous prime (6539545709821) and next prime (6539545709863).

It can be written as a sum of positive squares in 2 ways, for example, as 6304523396161 + 235022313681 = 2510881^2 + 484791^2 .

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

It is a super-2 number, since 2×6539545709842² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107407723 + ... + 107468590.

Almost surely, 2^{6539545709842} is an apocalyptic number.

6539545709842 is a deficient number, since it is larger than the sum of its proper divisors (3270417529514).

6539545709842 is a wasteful number, since it uses less digits than its factorization.

6539545709842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214891532.

The product of its (nonzero) digits is 326592000, while the sum is 67.

The spelling of 6539545709842 in words is "six trillion, five hundred thirty-nine billion, five hundred forty-five million, seven hundred nine thousand, eight hundred forty-two".