21302344410 has 16 divisors (see below), whose sum is σ = 51125626656. Its totient is φ = 5680625168.

The previous prime is 21302344403. The next prime is 21302344471. The reversal of 21302344410 is 1444320312.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355039044 + ... + 355039103.

It is an arithmetic number, because the mean of its divisors is an integer number (3195351666).

Almost surely, 2^21302344410 is an apocalyptic number.

21302344410 is an abundant number, since it is smaller than the sum of its proper divisors (29823282246).

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

21302344410 is a wasteful number, since it uses less digits than its factorization.

21302344410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710078157.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21302344410 its reverse (1444320312), we get a palindrome (22746664722).

The spelling of 21302344410 in words is "twenty-one billion, three hundred two million, three hundred forty-four thousand, four hundred ten".