21467799999959 has 2 divisors, whose sum is σ = 21467799999960. Its totient is φ = 21467799999958.

The previous prime is 21467799999953. The next prime is 21467799999967. The reversal of 21467799999959 is 95999999776412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21467799999959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21467799999953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10733899999979 + 10733899999980.

It is an arithmetic number, because the mean of its divisors is an integer number (10733899999980).

Almost surely, 2^{21467799999959} is an apocalyptic number.

21467799999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

21467799999959 is an equidigital number, since it uses as much as digits as its factorization.

21467799999959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56247715440, while the sum is 95.

The spelling of 21467799999959 in words is "twenty-one trillion, four hundred sixty-seven billion, seven hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-nine".