21324646713 has 8 divisors (see below), whose sum is σ = 29929328800. Its totient is φ = 13468197888.

The previous prime is 21324646697. The next prime is 21324646747. The reversal of 21324646713 is 31764642312.

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

It is not a de Polignac number, because 21324646713 - 2⁴ = 21324646697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21324746713) 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, 187058248 + ... + 187058361.

It is an arithmetic number, because the mean of its divisors is an integer number (3741166100).

Almost surely, 2^21324646713 is an apocalyptic number.

It is an amenable number.

21324646713 is a deficient number, since it is larger than the sum of its proper divisors (8604682087).

21324646713 is a wasteful number, since it uses less digits than its factorization.

21324646713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374116631.

The product of its digits is 145152, while the sum is 39.

The spelling of 21324646713 in words is "twenty-one billion, three hundred twenty-four million, six hundred forty-six thousand, seven hundred thirteen".