16555266736189 has 2 divisors, whose sum is σ = 16555266736190. Its totient is φ = 16555266736188.

The previous prime is 16555266736139. The next prime is 16555266736193. The reversal of 16555266736189 is 98163766255561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16262201500164 + 293065236025 = 4032642^2 + 541355^2 .

It is a cyclic number.

It is not a de Polignac number, because 16555266736189 - 2²⁵ = 16555233181757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16555266736139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277633368094 + 8277633368095.

It is an arithmetic number, because the mean of its divisors is an integer number (8277633368095).

Almost surely, 2^{16555266736189} is an apocalyptic number.

It is an amenable number.

16555266736189 is a deficient number, since it is larger than the sum of its proper divisors (1).

16555266736189 is an equidigital number, since it uses as much as digits as its factorization.

16555266736189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888000, while the sum is 70.

The spelling of 16555266736189 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-six million, seven hundred thirty-six thousand, one hundred eighty-nine".