6531542662 has 16 divisors (see below), whose sum is σ = 9985352112. Its totient is φ = 3203131360.

The previous prime is 6531542659. The next prime is 6531542687. The reversal of 6531542662 is 2662451356.

It is a happy number.

It is a super-2 number, since 2×6531542662² = 85322099091052092488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 407337 + ... + 423067.

It is an arithmetic number, because the mean of its divisors is an integer number (624084507).

Almost surely, 2^6531542662 is an apocalyptic number.

6531542662 is a deficient number, since it is larger than the sum of its proper divisors (3453809450).

6531542662 is a wasteful number, since it uses less digits than its factorization.

6531542662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703.

The product of its digits is 259200, while the sum is 40.

The square root of 6531542662 is about 80817.9600212725. The cubic root of 6531542662 is about 1869.2695119317.

The spelling of 6531542662 in words is "six billion, five hundred thirty-one million, five hundred forty-two thousand, six hundred sixty-two".