6530947871 has 8 divisors (see below), whose sum is σ = 7721317920. Its totient is φ = 5404922208.

The previous prime is 6530947861. The next prime is 6530947879. The reversal of 6530947871 is 1787490356.

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

It is not a de Polignac number, because 6530947871 - 2²² = 6526753567 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 (6530947879) 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 7 ways as a sum of consecutive naturals, for example, 16085876 + ... + 16086281.

It is an arithmetic number, because the mean of its divisors is an integer number (965164740).

Almost surely, 2^6530947871 is an apocalyptic number.

6530947871 is a deficient number, since it is larger than the sum of its proper divisors (1190370049).

6530947871 is a wasteful number, since it uses less digits than its factorization.

6530947871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32172193.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 6530947871 is about 80814.2801180583. The cubic root of 6530947871 is about 1869.2127689084.

The spelling of 6530947871 in words is "six billion, five hundred thirty million, nine hundred forty-seven thousand, eight hundred seventy-one".