16535053561 has 8 divisors (see below), whose sum is σ = 17814363840. Its totient is φ = 15256798032.

The previous prime is 16535053537. The next prime is 16535053643.

It is a happy number.

16535053561 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 16535053561 - 2⁵ = 16535053529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16535053531) 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 7 ways as a sum of consecutive naturals, for example, 230971 + ... + 293968.

It is an arithmetic number, because the mean of its divisors is an integer number (2226795480).

Almost surely, 2^16535053561 is an apocalyptic number.

It is an amenable number.

16535053561 is a deficient number, since it is larger than the sum of its proper divisors (1279310279).

16535053561 is a wasteful number, since it uses less digits than its factorization.

16535053561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527375.

The product of its (nonzero) digits is 202500, while the sum is 40.

The spelling of 16535053561 in words is "sixteen billion, five hundred thirty-five million, fifty-three thousand, five hundred sixty-one".