21304030434344 has 32 divisors (see below), whose sum is σ = 45651686071680. Its totient is φ = 9130260300864.

The previous prime is 21304030434329. The next prime is 21304030434361. The reversal of 21304030434344 is 44343403040312.

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, 15575174 + ... + 16887690.

It is an arithmetic number, because the mean of its divisors is an integer number (1426615189740).

Almost surely, 2^{21304030434344} is an apocalyptic number.

It is an amenable number.

21304030434344 is an abundant number, since it is smaller than the sum of its proper divisors (24347655637336).

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

21304030434344 is a wasteful number, since it uses less digits than its factorization.

21304030434344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602377 (or 1602373 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 21304030434344 its reverse (44343403040312), we get a palindrome (65647433474656).

The spelling of 21304030434344 in words is "twenty-one trillion, three hundred four billion, thirty million, four hundred thirty-four thousand, three hundred forty-four".