20682891179 has 2 divisors, whose sum is σ = 20682891180. Its totient is φ = 20682891178.

The previous prime is 20682891149. The next prime is 20682891181. The reversal of 20682891179 is 97119828602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20682891179 - 2¹² = 20682887083 is a prime.

Together with 20682891181, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20682891179.

It is not a weakly prime, because it can be changed into another prime (20682891149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341445589 + 10341445590.

It is an arithmetic number, because the mean of its divisors is an integer number (10341445590).

Almost surely, 2^20682891179 is an apocalyptic number.

20682891179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20682891179 is an equidigital number, since it uses as much as digits as its factorization.

20682891179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 20682891179 in words is "twenty billion, six hundred eighty-two million, eight hundred ninety-one thousand, one hundred seventy-nine".