40040017561241 has 2 divisors, whose sum is σ = 40040017561242. Its totient is φ = 40040017561240.

The previous prime is 40040017561147. The next prime is 40040017561249. The reversal of 40040017561241 is 14216571004004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37623858201241 + 2416159360000 = 6133829^2 + 1554400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40040017561241 is a prime.

It is not a weakly prime, because it can be changed into another prime (40040017561249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20020008780620 + 20020008780621.

It is an arithmetic number, because the mean of its divisors is an integer number (20020008780621).

Almost surely, 2^{40040017561241} is an apocalyptic number.

It is an amenable number.

40040017561241 is a deficient number, since it is larger than the sum of its proper divisors (1).

40040017561241 is an equidigital number, since it uses as much as digits as its factorization.

40040017561241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

Adding to 40040017561241 its reverse (14216571004004), we get a palindrome (54256588565245).

The spelling of 40040017561241 in words is "forty trillion, forty billion, seventeen million, five hundred sixty-one thousand, two hundred forty-one".