21163533223410 has 64 divisors (see below), whose sum is σ = 58256607605760. Its totient is φ = 5461556958720.

The previous prime is 21163533223409. The next prime is 21163533223423. The reversal of 21163533223410 is 1432233536112.

21163533223410 is a `hidden beast` number, since 2 + 1 + 1 + 63 + 533 + 2 + 23 + 41 + 0 = 666.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1264240927 + ... + 1264257666.

It is an arithmetic number, because the mean of its divisors is an integer number (910259493840).

Almost surely, 2^{21163533223410} is an apocalyptic number.

21163533223410 is an abundant number, since it is smaller than the sum of its proper divisors (37093074382350).

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

21163533223410 is a wasteful number, since it uses less digits than its factorization.

21163533223410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528498640 (or 2528498634 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 21163533223410 its reverse (1432233536112), we get a palindrome (22595766759522).

The spelling of 21163533223410 in words is "twenty-one trillion, one hundred sixty-three billion, five hundred thirty-three million, two hundred twenty-three thousand, four hundred ten".