16555220646341 has 16 divisors (see below), whose sum is σ = 18767921121600. Its totient is φ = 14476769255808.

The previous prime is 16555220646257. The next prime is 16555220646457. The reversal of 16555220646341 is 14364602255561.

It is a cyclic number.

It is not a de Polignac number, because 16555220646341 - 2⁴² = 12157174135237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16555220646341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16555222646341) 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, 3827945 + ... + 6911121.

It is an arithmetic number, because the mean of its divisors is an integer number (1172995070100).

Almost surely, 2^{16555220646341} is an apocalyptic number.

It is an amenable number.

16555220646341 is a deficient number, since it is larger than the sum of its proper divisors (2212700475259).

16555220646341 is a wasteful number, since it uses less digits than its factorization.

16555220646341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104948.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 16555220646341 in words is "sixteen trillion, five hundred fifty-five billion, two hundred twenty million, six hundred forty-six thousand, three hundred forty-one".