21068410104 has 96 divisors (see below), whose sum is σ = 65390008320. Its totient is φ = 6003091008.

The previous prime is 21068410087. The next prime is 21068410117. The reversal of 21068410104 is 40101486012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128017 + ... + 241919.

It is an arithmetic number, because the mean of its divisors is an integer number (681145920).

Almost surely, 2^21068410104 is an apocalyptic number.

21068410104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21068410104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32695004160).

21068410104 is an abundant number, since it is smaller than the sum of its proper divisors (44321598216).

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

21068410104 is a wasteful number, since it uses less digits than its factorization.

21068410104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114289 (or 114282 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

Adding to 21068410104 its reverse (40101486012), we get a palindrome (61169896116).

The spelling of 21068410104 in words is "twenty-one billion, sixty-eight million, four hundred ten thousand, one hundred four".