21482319007943 has 2 divisors, whose sum is σ = 21482319007944. Its totient is φ = 21482319007942.

The previous prime is 21482319007859. The next prime is 21482319007951. The reversal of 21482319007943 is 34970091328412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21482319007943 - 2¹⁰ = 21482319006919 is a prime.

It is a super-2 number, since 2×21482319007943² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21482319007993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10741159503971 + 10741159503972.

It is an arithmetic number, because the mean of its divisors is an integer number (10741159503972).

Almost surely, 2^{21482319007943} is an apocalyptic number.

21482319007943 is a deficient number, since it is larger than the sum of its proper divisors (1).

21482319007943 is an equidigital number, since it uses as much as digits as its factorization.

21482319007943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 21482319007943 in words is "twenty-one trillion, four hundred eighty-two billion, three hundred nineteen million, seven thousand, nine hundred forty-three".