21446514183079 has 2 divisors, whose sum is σ = 21446514183080. Its totient is φ = 21446514183078.

The previous prime is 21446514183047. The next prime is 21446514183109. The reversal of 21446514183079 is 97038141564412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21446514183079 - 2⁵ = 21446514183047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21446514183979) 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, 10723257091539 + 10723257091540.

It is an arithmetic number, because the mean of its divisors is an integer number (10723257091540).

It is a 1-persistent number, because it is pandigital, but 2⋅21446514183079 = 42893028366158 is not.

Almost surely, 2^{21446514183079} is an apocalyptic number.

21446514183079 is a deficient number, since it is larger than the sum of its proper divisors (1).

21446514183079 is an equidigital number, since it uses as much as digits as its factorization.

21446514183079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 21446514183079 in words is "twenty-one trillion, four hundred forty-six billion, five hundred fourteen million, one hundred eighty-three thousand, seventy-nine".