21663411150210 has 32 divisors (see below), whose sum is σ = 52292719644480. Its totient is φ = 5743517097408.

The previous prime is 21663411150179. The next prime is 21663411150217. The reversal of 21663411150210 is 1205111436612.

It is not an unprimeable number, because it can be changed into a prime (21663411150217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087028640 + ... + 2087039019.

It is an arithmetic number, because the mean of its divisors is an integer number (1634147488890).

Almost surely, 2^{21663411150210} is an apocalyptic number.

21663411150210 is an abundant number, since it is smaller than the sum of its proper divisors (30629308494270).

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

21663411150210 is a wasteful number, since it uses less digits than its factorization.

21663411150210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4174067842.

The product of its (nonzero) digits is 8640, while the sum is 33.

Adding to 21663411150210 its reverse (1205111436612), we get a palindrome (22868522586822).

The spelling of 21663411150210 in words is "twenty-one trillion, six hundred sixty-three billion, four hundred eleven million, one hundred fifty thousand, two hundred ten".