41319781779018 has 16 divisors (see below), whose sum is σ = 82773501269760. Its totient is φ = 13750937641056.

The previous prime is 41319781779013. The next prime is 41319781779019. The reversal of 41319781779018 is 81097718791314.

It is a self number, because there is not a number n which added to its sum of digits gives 41319781779018.

It is not an unprimeable number, because it can be changed into a prime (41319781779011) 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 in 7 ways as a sum of consecutive naturals, for example, 5580733978 + ... + 5580741381.

It is an arithmetic number, because the mean of its divisors is an integer number (5173343829360).

Almost surely, 2^{41319781779018} is an apocalyptic number.

41319781779018 is an abundant number, since it is smaller than the sum of its proper divisors (41453719490742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

41319781779018 is a wasteful number, since it uses less digits than its factorization.

41319781779018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161475981.

The product of its (nonzero) digits is 21337344, while the sum is 66.

The spelling of 41319781779018 in words is "forty-one trillion, three hundred nineteen billion, seven hundred eighty-one million, seven hundred seventy-nine thousand, eighteen".