6542471836 has 12 divisors (see below), whose sum is σ = 11450556040. Its totient is φ = 3270884400.

The previous prime is 6542471797. The next prime is 6542471839. The reversal of 6542471836 is 6381742456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542471839) 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 3 ways as a sum of consecutive naturals, for example, 43515 + ... + 122386.

Almost surely, 2^6542471836 is an apocalyptic number.

It is an amenable number.

6542471836 is a deficient number, since it is larger than the sum of its proper divisors (4908084204).

6542471836 is a wasteful number, since it uses less digits than its factorization.

6542471836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175764 (or 175762 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 6542471836 is about 80885.5477573095. The cubic root of 6542471836 is about 1870.3115417916.

The spelling of 6542471836 in words is "six billion, five hundred forty-two million, four hundred seventy-one thousand, eight hundred thirty-six".