40234272354721 has 2 divisors, whose sum is σ = 40234272354722. Its totient is φ = 40234272354720.

The previous prime is 40234272354697. The next prime is 40234272354733. The reversal of 40234272354721 is 12745327243204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36177049149696 + 4057223205025 = 6014736^2 + 2014255^2 .

It is a cyclic number.

It is not a de Polignac number, because 40234272354721 - 2¹⁹ = 40234271830433 is a prime.

It is not a weakly prime, because it can be changed into another prime (40234272054721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117136177360 + 20117136177361.

It is an arithmetic number, because the mean of its divisors is an integer number (20117136177361).

Almost surely, 2^{40234272354721} is an apocalyptic number.

It is an amenable number.

40234272354721 is a deficient number, since it is larger than the sum of its proper divisors (1).

40234272354721 is an equidigital number, since it uses as much as digits as its factorization.

40234272354721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 46.

Adding to 40234272354721 its reverse (12745327243204), we get a palindrome (52979599597925).

The spelling of 40234272354721 in words is "forty trillion, two hundred thirty-four billion, two hundred seventy-two million, three hundred fifty-four thousand, seven hundred twenty-one".