6542827871 has 4 divisors (see below), whose sum is σ = 6827298672. Its totient is φ = 6258357072.

The previous prime is 6542827861. The next prime is 6542827873. The reversal of 6542827871 is 1787282456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6542827871 - 2⁶ = 6542827807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542827873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142235366 + ... + 142235411.

It is an arithmetic number, because the mean of its divisors is an integer number (1706824668).

Almost surely, 2^6542827871 is an apocalyptic number.

6542827871 is a deficient number, since it is larger than the sum of its proper divisors (284470801).

6542827871 is a wasteful number, since it uses less digits than its factorization.

6542827871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284470800.

The product of its digits is 1505280, while the sum is 50.

The square root of 6542827871 is about 80887.7485840717. The cubic root of 6542827871 is about 1870.3454680255.

The spelling of 6542827871 in words is "six billion, five hundred forty-two million, eight hundred twenty-seven thousand, eight hundred seventy-one".