6334512065561 has 4 divisors (see below), whose sum is σ = 6334595349300. Its totient is φ = 6334428781824.

The previous prime is 6334512065537. The next prime is 6334512065657. The reversal of 6334512065561 is 1655602154336.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3354593718025 + 2979918347536 = 1831555^2 + 1726244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6334512065561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6334512062561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41527676 + ... + 41679933.

It is an arithmetic number, because the mean of its divisors is an integer number (1583648837325).

Almost surely, 2^{6334512065561} is an apocalyptic number.

It is an amenable number.

6334512065561 is a deficient number, since it is larger than the sum of its proper divisors (83283739).

6334512065561 is an equidigital number, since it uses as much as digits as its factorization.

6334512065561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83283738.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 6334512065561 in words is "six trillion, three hundred thirty-four billion, five hundred twelve million, sixty-five thousand, five hundred sixty-one".