6531549412 has 12 divisors (see below), whose sum is σ = 11431609840. Its totient is φ = 3265375176.

The previous prime is 6531549397. The next prime is 6531549419. The reversal of 6531549412 is 2149451356.

It is a super-2 number, since 2×6531549412² = 85322275442795091488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6531549419) 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, 61458 + ... + 129769.

Almost surely, 2^6531549412 is an apocalyptic number.

It is an amenable number.

6531549412 is a deficient number, since it is larger than the sum of its proper divisors (4900060428).

6531549412 is a wasteful number, since it uses less digits than its factorization.

6531549412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199770 (or 199768 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 6531549412 is about 80818.0017817813. The cubic root of 6531549412 is about 1869.2701558615.

The spelling of 6531549412 in words is "six billion, five hundred thirty-one million, five hundred forty-nine thousand, four hundred twelve".