21304054510 has 16 divisors (see below), whose sum is σ = 38365331472. Its totient is φ = 8517614400.

The previous prime is 21304054477. The next prime is 21304054517. The reversal of 21304054510 is 1545040312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21304054517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478551 + ... + 521170.

It is an arithmetic number, because the mean of its divisors is an integer number (2397833217).

Almost surely, 2^21304054510 is an apocalyptic number.

21304054510 is a deficient number, since it is larger than the sum of its proper divisors (17061276962).

21304054510 is a wasteful number, since it uses less digits than its factorization.

21304054510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001859.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 21304054510 its reverse (1545040312), we get a palindrome (22849094822).

The spelling of 21304054510 in words is "twenty-one billion, three hundred four million, fifty-four thousand, five hundred ten".