41421181993 has 2 divisors, whose sum is σ = 41421181994. Its totient is φ = 41421181992.

The previous prime is 41421181973. The next prime is 41421182051. The reversal of 41421181993 is 39918112414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32867151849 + 8554030144 = 181293^2 + 92488^2 .

It is a cyclic number.

It is not a de Polignac number, because 41421181993 - 2⁹ = 41421181481 is a prime.

It is not a weakly prime, because it can be changed into another prime (41421181973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20710590996 + 20710590997.

It is an arithmetic number, because the mean of its divisors is an integer number (20710590997).

Almost surely, 2^41421181993 is an apocalyptic number.

It is an amenable number.

41421181993 is a deficient number, since it is larger than the sum of its proper divisors (1).

41421181993 is an equidigital number, since it uses as much as digits as its factorization.

41421181993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The spelling of 41421181993 in words is "forty-one billion, four hundred twenty-one million, one hundred eighty-one thousand, nine hundred ninety-three".