16555266432611 has 4 divisors (see below), whose sum is σ = 16582098307512. Its totient is φ = 16528434557712.

The previous prime is 16555266432599. The next prime is 16555266432619. The reversal of 16555266432611 is 11623466255561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16555266432611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16555266432619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13415936525 + ... + 13415937758.

It is an arithmetic number, because the mean of its divisors is an integer number (4145524576878).

Almost surely, 2^{16555266432611} is an apocalyptic number.

16555266432611 is a deficient number, since it is larger than the sum of its proper divisors (26831874901).

16555266432611 is an equidigital number, since it uses as much as digits as its factorization.

16555266432611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26831874900.

The product of its digits is 7776000, while the sum is 53.

The spelling of 16555266432611 in words is "sixteen trillion, five hundred fifty-five billion, two hundred sixty-six million, four hundred thirty-two thousand, six hundred eleven".