21324340014 has 256 divisors, whose sum is σ = 50791587840. Its totient is φ = 5927567360.

The previous prime is 21324339983. The next prime is 21324340021. The reversal of 21324340014 is 41004342312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 239599282 + ... + 239599370.

It is an arithmetic number, because the mean of its divisors is an integer number (198404640).

Almost surely, 2^21324340014 is an apocalyptic number.

21324340014 is an abundant number, since it is smaller than the sum of its proper divisors (29467247826).

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

21324340014 is a wasteful number, since it uses less digits than its factorization.

21324340014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21324340014 its reverse (41004342312), we get a palindrome (62328682326).

The spelling of 21324340014 in words is "twenty-one billion, three hundred twenty-four million, three hundred forty thousand, fourteen".