41663121457 has 2 divisors, whose sum is σ = 41663121458. Its totient is φ = 41663121456.

The previous prime is 41663121389. The next prime is 41663121481. The reversal of 41663121457 is 75412136614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39887678961 + 1775442496 = 199719^2 + 42136^2 .

It is a cyclic number.

It is not a de Polignac number, because 41663121457 - 2¹¹ = 41663119409 is a prime.

It is not a weakly prime, because it can be changed into another prime (41663121497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20831560728 + 20831560729.

It is an arithmetic number, because the mean of its divisors is an integer number (20831560729).

Almost surely, 2^41663121457 is an apocalyptic number.

It is an amenable number.

41663121457 is a deficient number, since it is larger than the sum of its proper divisors (1).

41663121457 is an equidigital number, since it uses as much as digits as its factorization.

41663121457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The spelling of 41663121457 in words is "forty-one billion, six hundred sixty-three million, one hundred twenty-one thousand, four hundred fifty-seven".