21796482179 has 2 divisors, whose sum is σ = 21796482180. Its totient is φ = 21796482178.

The previous prime is 21796482173. The next prime is 21796482209. The reversal of 21796482179 is 97128469712.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21796482179 - 2²⁰ = 21795433603 is a prime.

It is not a weakly prime, because it can be changed into another prime (21796482173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10898241089 + 10898241090.

It is an arithmetic number, because the mean of its divisors is an integer number (10898241090).

Almost surely, 2^21796482179 is an apocalyptic number.

21796482179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21796482179 is an equidigital number, since it uses as much as digits as its factorization.

21796482179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 56.

The spelling of 21796482179 in words is "twenty-one billion, seven hundred ninety-six million, four hundred eighty-two thousand, one hundred seventy-nine".