21630542060324 has 24 divisors (see below), whose sum is σ = 38774405688480. Its totient is φ = 10552668283584.

The previous prime is 21630542060317. The next prime is 21630542060333. The reversal of 21630542060324 is 42306024503612.

It is an unprimeable number.

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, 65816654 + ... + 66144485.

It is an arithmetic number, because the mean of its divisors is an integer number (1615600237020).

Almost surely, 2^{21630542060324} is an apocalyptic number.

It is an amenable number.

21630542060324 is a deficient number, since it is larger than the sum of its proper divisors (17143863628156).

21630542060324 is a wasteful number, since it uses less digits than its factorization.

21630542060324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131962139 (or 131962137 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 21630542060324 its reverse (42306024503612), we get a palindrome (63936566563936).

The spelling of 21630542060324 in words is "twenty-one trillion, six hundred thirty billion, five hundred forty-two million, sixty thousand, three hundred twenty-four".