6531116351 has 4 divisors (see below), whose sum is σ = 6582542592. Its totient is φ = 6479690112.

The previous prime is 6531116323. The next prime is 6531116359. The reversal of 6531116351 is 1536111356.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6531116351 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 (6531116359) 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, 25712930 + ... + 25713183.

It is an arithmetic number, because the mean of its divisors is an integer number (1645635648).

Almost surely, 2^6531116351 is an apocalyptic number.

6531116351 is a deficient number, since it is larger than the sum of its proper divisors (51426241).

6531116351 is a wasteful number, since it uses less digits than its factorization.

6531116351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51426240.

The product of its digits is 8100, while the sum is 32.

The square root of 6531116351 is about 80815.3225013673. The cubic root of 6531116351 is about 1869.2288422393.

The spelling of 6531116351 in words is "six billion, five hundred thirty-one million, one hundred sixteen thousand, three hundred fifty-one".