21340024413 has 16 divisors (see below), whose sum is σ = 28561589760. Its totient is φ = 14172630336.

The previous prime is 21340024403. The next prime is 21340024421. The reversal of 21340024413 is 31442004312.

It is not a de Polignac number, because 21340024413 - 2¹⁴ = 21340008029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21340024403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1666431 + ... + 1679187.

It is an arithmetic number, because the mean of its divisors is an integer number (1785099360).

Almost surely, 2^21340024413 is an apocalyptic number.

It is an amenable number.

21340024413 is a deficient number, since it is larger than the sum of its proper divisors (7221565347).

21340024413 is a wasteful number, since it uses less digits than its factorization.

21340024413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14836.

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

Adding to 21340024413 its reverse (31442004312), we get a palindrome (52782028725).

The spelling of 21340024413 in words is "twenty-one billion, three hundred forty million, twenty-four thousand, four hundred thirteen".