2646549436609 has 16 divisors (see below), whose sum is σ = 3013013203200. Its totient is φ = 2304458349696.

The previous prime is 2646549436589. The next prime is 2646549436621. The reversal of 2646549436609 is 9066349456462.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2646549436609 - 2⁵ = 2646549436577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2646549434609) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22935529 + ... + 23050630.

It is an arithmetic number, because the mean of its divisors is an integer number (188313325200).

Almost surely, 2^{2646549436609} is an apocalyptic number.

It is an amenable number.

2646549436609 is a deficient number, since it is larger than the sum of its proper divisors (366463766591).

2646549436609 is a wasteful number, since it uses less digits than its factorization.

2646549436609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45986424.

The product of its (nonzero) digits is 201553920, while the sum is 64.

The spelling of 2646549436609 in words is "two trillion, six hundred forty-six billion, five hundred forty-nine million, four hundred thirty-six thousand, six hundred nine".