21153324259 has 2 divisors, whose sum is σ = 21153324260. Its totient is φ = 21153324258.

The previous prime is 21153324223. The next prime is 21153324277. The reversal of 21153324259 is 95242335112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21153324259 - 2²¹ = 21151227107 is a prime.

It is not a weakly prime, because it can be changed into another prime (21153324559) 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, 10576662129 + 10576662130.

It is an arithmetic number, because the mean of its divisors is an integer number (10576662130).

Almost surely, 2^21153324259 is an apocalyptic number.

21153324259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21153324259 is an equidigital number, since it uses as much as digits as its factorization.

21153324259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The spelling of 21153324259 in words is "twenty-one billion, one hundred fifty-three million, three hundred twenty-four thousand, two hundred fifty-nine".