21874023342343 has 2 divisors, whose sum is σ = 21874023342344. Its totient is φ = 21874023342342.

The previous prime is 21874023342313. The next prime is 21874023342389. The reversal of 21874023342343 is 34324332047812.

It is an a-pointer prime, because the next prime (21874023342389) can be obtained adding 21874023342343 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21874023342343 - 2¹³ = 21874023334151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21874023342293 and 21874023342302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21874023342313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10937011671171 + 10937011671172.

It is an arithmetic number, because the mean of its divisors is an integer number (10937011671172).

Almost surely, 2^{21874023342343} is an apocalyptic number.

21874023342343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21874023342343 is an equidigital number, since it uses as much as digits as its factorization.

21874023342343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 46.

The spelling of 21874023342343 in words is "twenty-one trillion, eight hundred seventy-four billion, twenty-three million, three hundred forty-two thousand, three hundred forty-three".