41319781779019 has 2 divisors, whose sum is σ = 41319781779020. Its totient is φ = 41319781779018.

The previous prime is 41319781779013. The next prime is 41319781779127. The reversal of 41319781779019 is 91097718791314.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41319781779019 - 2³ = 41319781779011 is a prime.

It is a super-2 number, since 2×41319781779019² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41319781779011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20659890889509 + 20659890889510.

It is an arithmetic number, because the mean of its divisors is an integer number (20659890889510).

Almost surely, 2^{41319781779019} is an apocalyptic number.

41319781779019 is a deficient number, since it is larger than the sum of its proper divisors (1).

41319781779019 is an equidigital number, since it uses as much as digits as its factorization.

41319781779019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24004512, while the sum is 67.

The spelling of 41319781779019 in words is "forty-one trillion, three hundred nineteen billion, seven hundred eighty-one million, seven hundred seventy-nine thousand, nineteen".