16516266261 has 8 divisors (see below), whose sum is σ = 24023660064. Its totient is φ = 10009858320.

The previous prime is 16516266229. The next prime is 16516266269. The reversal of 16516266261 is 16266261561.

16516266261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16516266261 - 2⁵ = 16516266229 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516266269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250246426 + ... + 250246491.

It is an arithmetic number, because the mean of its divisors is an integer number (3002957508).

Almost surely, 2^16516266261 is an apocalyptic number.

16516266261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16516266261 is a deficient number, since it is larger than the sum of its proper divisors (7507393803).

16516266261 is a wasteful number, since it uses less digits than its factorization.

16516266261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500492931.

The product of its digits is 155520, while the sum is 42.

The spelling of 16516266261 in words is "sixteen billion, five hundred sixteen million, two hundred sixty-six thousand, two hundred sixty-one".