6561214112 has 24 divisors (see below), whose sum is σ = 12967668756. Its totient is φ = 3267837952.

The previous prime is 6561214111. The next prime is 6561214183. The reversal of 6561214112 is 2114121656.

It can be written as a sum of positive squares in 2 ways, for example, as 6522823696 + 38390416 = 80764^2 + 6196^2 .

It is not an unprimeable number, because it can be changed into a prime (6561214111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390683 + ... + 407130.

Almost surely, 2^6561214112 is an apocalyptic number.

It is an amenable number.

6561214112 is a deficient number, since it is larger than the sum of its proper divisors (6406454644).

6561214112 is a wasteful number, since it uses less digits than its factorization.

6561214112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798080 (or 798072 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 6561214112 is about 81001.3216682296. The cubic root of 6561214112 is about 1872.0958049928.

Adding to 6561214112 its reverse (2114121656), we get a palindrome (8675335768).

The spelling of 6561214112 in words is "six billion, five hundred sixty-one million, two hundred fourteen thousand, one hundred twelve".