16653044035661 has 16 divisors (see below), whose sum is σ = 18518108474880. Its totient is φ = 14849129273520.

The previous prime is 16653044035613. The next prime is 16653044035721.

16653044035661 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 16653044035661 - 2¹⁴ = 16653044019277 is a prime.

It is a Duffinian 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 (16653044035861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65484305 + ... + 65738118.

It is an arithmetic number, because the mean of its divisors is an integer number (1157381779680).

Almost surely, 2^{16653044035661} is an apocalyptic number.

16653044035661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16653044035661 is a deficient number, since it is larger than the sum of its proper divisors (1865064439219).

16653044035661 is a wasteful number, since it uses less digits than its factorization.

16653044035661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131222656.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 16653044035661 in words is "sixteen trillion, six hundred fifty-three billion, forty-four million, thirty-five thousand, six hundred sixty-one".