6531839997 has 8 divisors (see below), whose sum is σ = 8777696256. Its totient is φ = 4320271872.

The previous prime is 6531839971. The next prime is 6531839999. The reversal of 6531839997 is 7999381356.

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

It is not a de Polignac number, because 6531839997 - 2⁷ = 6531839869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6531839997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531839999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8571588 + ... + 8572349.

It is an arithmetic number, because the mean of its divisors is an integer number (1097212032).

Almost surely, 2^6531839997 is an apocalyptic number.

It is an amenable number.

6531839997 is a deficient number, since it is larger than the sum of its proper divisors (2245856259).

6531839997 is a wasteful number, since it uses less digits than its factorization.

6531839997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17144067.

The product of its digits is 11022480, while the sum is 60.

The square root of 6531839997 is about 80819.7995357573. The cubic root of 6531839997 is about 1869.2978763802.

The spelling of 6531839997 in words is "six billion, five hundred thirty-one million, eight hundred thirty-nine thousand, nine hundred ninety-seven".