21304054354 has 16 divisors (see below), whose sum is σ = 34864934976. Its totient is φ = 9682618000.

The previous prime is 21304054351. The next prime is 21304054363. The reversal of 21304054354 is 45345040312.

It is not an unprimeable number, because it can be changed into a prime (21304054351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179619 + ... + 273625.

It is an arithmetic number, because the mean of its divisors is an integer number (2179058436).

Almost surely, 2^21304054354 is an apocalyptic number.

21304054354 is a deficient number, since it is larger than the sum of its proper divisors (13560880622).

21304054354 is a wasteful number, since it uses less digits than its factorization.

21304054354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104321.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 21304054354 its reverse (45345040312), we get a palindrome (66649094666).

The spelling of 21304054354 in words is "twenty-one billion, three hundred four million, fifty-four thousand, three hundred fifty-four".