21616052502233 has 8 divisors (see below), whose sum is σ = 25208224492800. Its totient is φ = 18528045001620.

The previous prime is 21616052502197. The next prime is 21616052502271. The reversal of 21616052502233 is 33220525061612.

It is not a de Polignac number, because 21616052502233 - 2¹⁴ = 21616052485849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21616052507233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31510280273 + ... + 31510280958.

It is an arithmetic number, because the mean of its divisors is an integer number (3151028061600).

Almost surely, 2^{21616052502233} is an apocalyptic number.

It is an amenable number.

21616052502233 is a deficient number, since it is larger than the sum of its proper divisors (3592171990567).

21616052502233 is an frugal number, since it uses more digits than its factorization.

21616052502233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63020561252 (or 63020561238 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 21616052502233 its reverse (33220525061612), we get a palindrome (54836577563845).

The spelling of 21616052502233 in words is "twenty-one trillion, six hundred sixteen billion, fifty-two million, five hundred two thousand, two hundred thirty-three".