40354869318481 has 2 divisors, whose sum is σ = 40354869318482. Its totient is φ = 40354869318480.

The previous prime is 40354869318461. The next prime is 40354869318523. The reversal of 40354869318481 is 18481396845304.

40354869318481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36047235484225 + 4307633834256 = 6003935^2 + 2075484^2 .

It is a cyclic number.

It is not a de Polignac number, because 40354869318481 - 2¹⁵ = 40354869285713 is a prime.

It is a super-2 number, since 2×40354869318481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40354869318461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20177434659240 + 20177434659241.

It is an arithmetic number, because the mean of its divisors is an integer number (20177434659241).

Almost surely, 2^{40354869318481} is an apocalyptic number.

It is an amenable number.

40354869318481 is a deficient number, since it is larger than the sum of its proper divisors (1).

40354869318481 is an equidigital number, since it uses as much as digits as its factorization.

40354869318481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79626240, while the sum is 64.

The spelling of 40354869318481 in words is "forty trillion, three hundred fifty-four billion, eight hundred sixty-nine million, three hundred eighteen thousand, four hundred eighty-one".