21704027104 has 24 divisors (see below), whose sum is σ = 44978741640. Its totient is φ = 10280854656.

The previous prime is 21704027071. The next prime is 21704027113. The reversal of 21704027104 is 40172040712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17848099 + ... + 17849314.

It is an arithmetic number, because the mean of its divisors is an integer number (1874114235).

Almost surely, 2^21704027104 is an apocalyptic number.

It is an amenable number.

21704027104 is an abundant number, since it is smaller than the sum of its proper divisors (23274714536).

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

21704027104 is a wasteful number, since it uses less digits than its factorization.

21704027104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35697442 (or 35697434 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

Adding to 21704027104 its reverse (40172040712), we get a palindrome (61876067816).

The spelling of 21704027104 in words is "twenty-one billion, seven hundred four million, twenty-seven thousand, one hundred four".