266121610230 has 192 divisors, whose sum is σ = 754283681280. Its totient is φ = 59903940096.

The previous prime is 266121610217. The next prime is 266121610231. The reversal of 266121610230 is 32016121662.

It is a super-2 number, since 2×266121610230² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266121610231) 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 95 ways as a sum of consecutive naturals, for example, 92177847 + ... + 92180733.

It is an arithmetic number, because the mean of its divisors is an integer number (3928560840).

Almost surely, 2^266121610230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266121610230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377141840640).

266121610230 is an abundant number, since it is smaller than the sum of its proper divisors (488162071050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266121610230 is a wasteful number, since it uses less digits than its factorization.

266121610230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843 (or 3836 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 266121610230 its reverse (32016121662), we get a palindrome (298137731892).

The spelling of 266121610230 in words is "two hundred sixty-six billion, one hundred twenty-one million, six hundred ten thousand, two hundred thirty".