16553110811 has 4 divisors (see below), whose sum is σ = 16626032232. Its totient is φ = 16480189392.

The previous prime is 16553110799. The next prime is 16553110823. The reversal of 16553110811 is 11801135561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11801135561 = 29 ⋅406935709.

It is an interprime number because it is at equal distance from previous prime (16553110799) and next prime (16553110823).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16553110811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16553110841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36460370 + ... + 36460823.

It is an arithmetic number, because the mean of its divisors is an integer number (4156508058).

Almost surely, 2^16553110811 is an apocalyptic number.

16553110811 is a deficient number, since it is larger than the sum of its proper divisors (72921421).

16553110811 is an equidigital number, since it uses as much as digits as its factorization.

16553110811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72921420.

The product of its (nonzero) digits is 3600, while the sum is 32.

The spelling of 16553110811 in words is "sixteen billion, five hundred fifty-three million, one hundred ten thousand, eight hundred eleven".