6531146512 has 20 divisors (see below), whose sum is σ = 13804469136. Its totient is φ = 2968702880.

The previous prime is 6531146477. The next prime is 6531146519. The reversal of 6531146512 is 2156411356.

It is a super-2 number, since 2×6531146512² = 85311749522419532288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6531146519) 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, 18554218 + ... + 18554569.

Almost surely, 2^6531146512 is an apocalyptic number.

It is an amenable number.

6531146512 is an abundant number, since it is smaller than the sum of its proper divisors (7273322624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6531146512 is a wasteful number, since it uses less digits than its factorization.

6531146512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37108806 (or 37108800 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 6531146512 is about 80815.5091056166. The cubic root of 6531146512 is about 1869.2317196302.

Adding to 6531146512 its reverse (2156411356), we get a palindrome (8687557868).

The spelling of 6531146512 in words is "six billion, five hundred thirty-one million, one hundred forty-six thousand, five hundred twelve".