16550345172653 has 2 divisors, whose sum is σ = 16550345172654. Its totient is φ = 16550345172652.

The previous prime is 16550345172649. The next prime is 16550345172679. The reversal of 16550345172653 is 35627154305561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9141268043209 + 7409077129444 = 3023453^2 + 2721962^2 .

It is a cyclic number.

It is not a de Polignac number, because 16550345172653 - 2² = 16550345172649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16550345172595 and 16550345172604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16550345172553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275172586326 + 8275172586327.

It is an arithmetic number, because the mean of its divisors is an integer number (8275172586327).

Almost surely, 2^{16550345172653} is an apocalyptic number.

It is an amenable number.

16550345172653 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550345172653 is an equidigital number, since it uses as much as digits as its factorization.

16550345172653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340000, while the sum is 53.

The spelling of 16550345172653 in words is "sixteen trillion, five hundred fifty billion, three hundred forty-five million, one hundred seventy-two thousand, six hundred fifty-three".