21852912489259 has 2 divisors, whose sum is σ = 21852912489260. Its totient is φ = 21852912489258.

The previous prime is 21852912489251. The next prime is 21852912489307. The reversal of 21852912489259 is 95298421925812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21852912489259 - 2³ = 21852912489251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21852912489194 and 21852912489203.

It is not a weakly prime, because it can be changed into another prime (21852912489251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10926456244629 + 10926456244630.

It is an arithmetic number, because the mean of its divisors is an integer number (10926456244630).

Almost surely, 2^{21852912489259} is an apocalyptic number.

21852912489259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21852912489259 is an equidigital number, since it uses as much as digits as its factorization.

21852912489259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74649600, while the sum is 67.

The spelling of 21852912489259 in words is "twenty-one trillion, eight hundred fifty-two billion, nine hundred twelve million, four hundred eighty-nine thousand, two hundred fifty-nine".