16235566553261 has 8 divisors (see below), whose sum is σ = 18282866734848. Its totient is φ = 14283489636000.

The previous prime is 16235566553249. The next prime is 16235566553263.

16235566553261 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 16235566553261 - 2¹⁸ = 16235566291117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16235566553197 and 16235566553206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16235566553263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23805815720 + ... + 23805816401.

It is an arithmetic number, because the mean of its divisors is an integer number (2285358341856).

Almost surely, 2^{16235566553261} is an apocalyptic number.

16235566553261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16235566553261 is a deficient number, since it is larger than the sum of its proper divisors (2047300181587).

16235566553261 is a wasteful number, since it uses less digits than its factorization.

16235566553261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47611632163.

The product of its digits is 29160000, while the sum is 56.

The spelling of 16235566553261 in words is "sixteen trillion, two hundred thirty-five billion, five hundred sixty-six million, five hundred fifty-three thousand, two hundred sixty-one".