16550755705561 has 32 divisors (see below), whose sum is σ = 21849697486080. Its totient is φ = 12137406720000.

The previous prime is 16550755705531. The next prime is 16550755705577.

16550755705561 is nontrivially palindromic in base 10.

16550755705561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16550755705561 - 2²¹ = 16550753608409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16550755705496 and 16550755705505.

It is not an unprimeable number, because it can be changed into a prime (16550755705531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24539595 + ... + 25205023.

It is an arithmetic number, because the mean of its divisors is an integer number (682803046440).

Almost surely, 2^{16550755705561} is an apocalyptic number.

16550755705561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16550755705561 is a deficient number, since it is larger than the sum of its proper divisors (5298941780519).

16550755705561 is a wasteful number, since it uses less digits than its factorization.

16550755705561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684465.

The product of its (nonzero) digits is 27562500, while the sum is 58.

The spelling of 16550755705561 in words is "sixteen trillion, five hundred fifty billion, seven hundred fifty-five million, seven hundred five thousand, five hundred sixty-one".