21342411424351 has 2 divisors, whose sum is σ = 21342411424352. Its totient is φ = 21342411424350.

The previous prime is 21342411424307. The next prime is 21342411424417. The reversal of 21342411424351 is 15342411424312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21342411424351 - 2¹⁷ = 21342411293279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21342411424351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21342411424651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10671205712175 + 10671205712176.

It is an arithmetic number, because the mean of its divisors is an integer number (10671205712176).

Almost surely, 2^{21342411424351} is an apocalyptic number.

21342411424351 is a deficient number, since it is larger than the sum of its proper divisors (1).

21342411424351 is an equidigital number, since it uses as much as digits as its factorization.

21342411424351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 37.

Adding to 21342411424351 its reverse (15342411424312), we get a palindrome (36684822848663).

The spelling of 21342411424351 in words is "twenty-one trillion, three hundred forty-two billion, four hundred eleven million, four hundred twenty-four thousand, three hundred fifty-one".