21306535483 has 2 divisors, whose sum is σ = 21306535484. Its totient is φ = 21306535482.

The previous prime is 21306535463. The next prime is 21306535493. The reversal of 21306535483 is 38453560312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21306535483 - 2²⁹ = 20769664571 is a prime.

It is not a weakly prime, because it can be changed into another prime (21306535463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10653267741 + 10653267742.

It is an arithmetic number, because the mean of its divisors is an integer number (10653267742).

Almost surely, 2^21306535483 is an apocalyptic number.

21306535483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21306535483 is an equidigital number, since it uses as much as digits as its factorization.

21306535483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 21306535483 in words is "twenty-one billion, three hundred six million, five hundred thirty-five thousand, four hundred eighty-three".