16604563645013 has 16 divisors (see below), whose sum is σ = 17181921891840. Its totient is φ = 16029817876800.

The previous prime is 16604563644983. The next prime is 16604563645037. The reversal of 16604563645013 is 31054636540661.

It is a cyclic number.

It is not a de Polignac number, because 16604563645013 - 2²² = 16604559450709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604563645073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336939131 + ... + 336988407.

It is an arithmetic number, because the mean of its divisors is an integer number (1073870118240).

Almost surely, 2^{16604563645013} is an apocalyptic number.

It is an amenable number.

16604563645013 is a deficient number, since it is larger than the sum of its proper divisors (577358246827).

16604563645013 is a wasteful number, since it uses less digits than its factorization.

16604563645013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75548.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 16604563645013 in words is "sixteen trillion, six hundred four billion, five hundred sixty-three million, six hundred forty-five thousand, thirteen".