21324140013 has 8 divisors (see below), whose sum is σ = 31016930976. Its totient is φ = 12923721200.

The previous prime is 21324139997. The next prime is 21324140023. The reversal of 21324140013 is 31004142312.

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

It is a cyclic number.

It is not a de Polignac number, because 21324140013 - 2⁴ = 21324139997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324140023) 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, 323092998 + ... + 323093063.

It is an arithmetic number, because the mean of its divisors is an integer number (3877116372).

Almost surely, 2^21324140013 is an apocalyptic number.

It is an amenable number.

21324140013 is a deficient number, since it is larger than the sum of its proper divisors (9692790963).

21324140013 is a wasteful number, since it uses less digits than its factorization.

21324140013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646186075.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21324140013 its reverse (31004142312), we get a palindrome (52328282325).

The spelling of 21324140013 in words is "twenty-one billion, three hundred twenty-four million, one hundred forty thousand, thirteen".