16223333332261 has 4 divisors (see below), whose sum is σ = 17698181817024. Its totient is φ = 14748484847500.

The previous prime is 16223333332249. The next prime is 16223333332267.

16223333332261 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16223333332261 - 2¹¹ = 16223333330213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223333332267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737424242365 + ... + 737424242386.

It is an arithmetic number, because the mean of its divisors is an integer number (4424545454256).

Almost surely, 2^{16223333332261} is an apocalyptic number.

16223333332261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16223333332261 is a deficient number, since it is larger than the sum of its proper divisors (1474848484763).

16223333332261 is a wasteful number, since it uses less digits than its factorization.

16223333332261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474848484762.

The product of its digits is 419904, while the sum is 40.

It can be divided in two parts, 1622333 and 3332261, that added together give a palindrome (4954594).

The spelling of 16223333332261 in words is "sixteen trillion, two hundred twenty-three billion, three hundred thirty-three million, three hundred thirty-two thousand, two hundred sixty-one".