21304054435 has 8 divisors (see below), whose sum is σ = 26255807856. Its totient is φ = 16582615200.

The previous prime is 21304054433. The next prime is 21304054477. The reversal of 21304054435 is 53445040312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21304054435 - 2¹ = 21304054433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21304054397 and 21304054406.

It is not an unprimeable number, because it can be changed into a prime (21304054433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57578341 + ... + 57578710.

It is an arithmetic number, because the mean of its divisors is an integer number (3281975982).

Almost surely, 2^21304054435 is an apocalyptic number.

21304054435 is a deficient number, since it is larger than the sum of its proper divisors (4951753421).

21304054435 is a wasteful number, since it uses less digits than its factorization.

21304054435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115157093.

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

Adding to 21304054435 its reverse (53445040312), we get a palindrome (74749094747).

The spelling of 21304054435 in words is "twenty-one billion, three hundred four million, fifty-four thousand, four hundred thirty-five".