41979738209 has 2 divisors, whose sum is σ = 41979738210. Its totient is φ = 41979738208.

The previous prime is 41979738187. The next prime is 41979738259. The reversal of 41979738209 is 90283797914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34867345984 + 7112392225 = 186728^2 + 84335^2 .

It is a cyclic number.

It is not a de Polignac number, because 41979738209 - 2⁸ = 41979737953 is a prime.

It is not a weakly prime, because it can be changed into another prime (41979738259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20989869104 + 20989869105.

It is an arithmetic number, because the mean of its divisors is an integer number (20989869105).

Almost surely, 2^41979738209 is an apocalyptic number.

It is an amenable number.

41979738209 is a deficient number, since it is larger than the sum of its proper divisors (1).

41979738209 is an equidigital number, since it uses as much as digits as its factorization.

41979738209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 41979738209 in words is "forty-one billion, nine hundred seventy-nine million, seven hundred thirty-eight thousand, two hundred nine".