21140324324 has 12 divisors (see below), whose sum is σ = 42280648704. Its totient is φ = 9060138984.

The previous prime is 21140324323. The next prime is 21140324363. The reversal of 21140324324 is 42342304112.

21140324324 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21140324293 and 21140324302.

It is not an unprimeable number, because it can be changed into a prime (21140324323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377505764 + ... + 377505819.

It is an arithmetic number, because the mean of its divisors is an integer number (3523387392).

Almost surely, 2^21140324324 is an apocalyptic number.

It is an amenable number.

21140324324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21140324324 is a wasteful number, since it uses less digits than its factorization.

21140324324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755011594 (or 755011592 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21140324324 its reverse (42342304112), we get a palindrome (63482628436).

The spelling of 21140324324 in words is "twenty-one billion, one hundred forty million, three hundred twenty-four thousand, three hundred twenty-four".