21004305410 has 128 divisors (see below), whose sum is σ = 44491037184. Its totient is φ = 7061852160.

The previous prime is 21004305389. The next prime is 21004305461. The reversal of 21004305410 is 1450340012.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16193882 + ... + 16195178.

It is an arithmetic number, because the mean of its divisors is an integer number (347586228).

Almost surely, 2^21004305410 is an apocalyptic number.

21004305410 is an abundant number, since it is smaller than the sum of its proper divisors (23486731774).

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

21004305410 is a wasteful number, since it uses less digits than its factorization.

21004305410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 21004305410 its reverse (1450340012), we get a palindrome (22454645422).

The spelling of 21004305410 in words is "twenty-one billion, four million, three hundred five thousand, four hundred ten".