21467713259 has 2 divisors, whose sum is σ = 21467713260. Its totient is φ = 21467713258.

The previous prime is 21467713231. The next prime is 21467713291. The reversal of 21467713259 is 95231776412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21467713259 - 2¹² = 21467709163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21467713459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10733856629 + 10733856630.

It is an arithmetic number, because the mean of its divisors is an integer number (10733856630).

Almost surely, 2^21467713259 is an apocalyptic number.

21467713259 is a deficient number, since it is larger than the sum of its proper divisors (1).

21467713259 is an equidigital number, since it uses as much as digits as its factorization.

21467713259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The spelling of 21467713259 in words is "twenty-one billion, four hundred sixty-seven million, seven hundred thirteen thousand, two hundred fifty-nine".