16506053611 has 4 divisors (see below), whose sum is σ = 16516313800. Its totient is φ = 16495793424.

The previous prime is 16506053587. The next prime is 16506053617. The reversal of 16506053611 is 11635060561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11635060561 = 1367 ⋅8511383.

It is a cyclic number.

It is not a de Polignac number, because 16506053611 - 2¹³ = 16506045419 is a prime.

It is a super-2 number, since 2×16506053611² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16506053617) 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, 5127681 + ... + 5130898.

It is an arithmetic number, because the mean of its divisors is an integer number (4129078450).

Almost surely, 2^16506053611 is an apocalyptic number.

16506053611 is a deficient number, since it is larger than the sum of its proper divisors (10260189).

16506053611 is a wasteful number, since it uses less digits than its factorization.

16506053611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260188.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 16506053611 in words is "sixteen billion, five hundred six million, fifty-three thousand, six hundred eleven".