6531641071 has 4 divisors (see below), whose sum is σ = 6532894944. Its totient is φ = 6530387200.

The previous prime is 6531641059. The next prime is 6531641101. The reversal of 6531641071 is 1701461356.

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 6531641071 - 2¹⁹ = 6531116783 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 (6531641671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619090 + ... + 629551.

It is an arithmetic number, because the mean of its divisors is an integer number (1633223736).

Almost surely, 2^6531641071 is an apocalyptic number.

6531641071 is a deficient number, since it is larger than the sum of its proper divisors (1253873).

6531641071 is a wasteful number, since it uses less digits than its factorization.

6531641071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253872.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 6531641071 is about 80818.5688502339. The cubic root of 6531641071 is about 1869.2788998119.

The spelling of 6531641071 in words is "six billion, five hundred thirty-one million, six hundred forty-one thousand, seventy-one".