16555550611 has 6 divisors (see below), whose sum is σ = 17472756012. Its totient is φ = 15684205500.

The previous prime is 16555550593. The next prime is 16555550617. The reversal of 16555550611 is 11605555561.

It is not a de Polignac number, because 16555550611 - 2³¹ = 14408066963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16555550617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22929765 + ... + 22930486.

It is an arithmetic number, because the mean of its divisors is an integer number (2912126002).

Almost surely, 2^16555550611 is an apocalyptic number.

16555550611 is a deficient number, since it is larger than the sum of its proper divisors (917205401).

16555550611 is an equidigital number, since it uses as much as digits as its factorization.

16555550611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45860289 (or 45860270 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 16555550611 in words is "sixteen billion, five hundred fifty-five million, five hundred fifty thousand, six hundred eleven".