21616024144333 has 4 divisors (see below), whose sum is σ = 21830044185468. Its totient is φ = 21402004103200.

The previous prime is 21616024144277. The next prime is 21616024144373. The reversal of 21616024144333 is 33344142061612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9973993534569 + 11642030609764 = 3158163^2 + 3412042^2 .

It is a cyclic number.

It is not a de Polignac number, because 21616024144333 - 2²¹ = 21616022047181 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 (21616024144373) 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, 107010020416 + ... + 107010020617.

It is an arithmetic number, because the mean of its divisors is an integer number (5457511046367).

Almost surely, 2^{21616024144333} is an apocalyptic number.

It is an amenable number.

21616024144333 is a deficient number, since it is larger than the sum of its proper divisors (214020041135).

21616024144333 is a wasteful number, since it uses less digits than its factorization.

21616024144333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214020041134.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 21616024144333 in words is "twenty-one trillion, six hundred sixteen billion, twenty-four million, one hundred forty-four thousand, three hundred thirty-three".