40451213234197 has 2 divisors, whose sum is σ = 40451213234198. Its totient is φ = 40451213234196.

The previous prime is 40451213234177. The next prime is 40451213234227. The reversal of 40451213234197 is 79143231215404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34083014620356 + 6368198613841 = 5838066^2 + 2523529^2 .

It is a cyclic number.

It is not a de Polignac number, because 40451213234197 - 2¹¹ = 40451213232149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40451213234177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20225606617098 + 20225606617099.

It is an arithmetic number, because the mean of its divisors is an integer number (20225606617099).

Almost surely, 2^{40451213234197} is an apocalyptic number.

It is an amenable number.

40451213234197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40451213234197 is an equidigital number, since it uses as much as digits as its factorization.

40451213234197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 40451213234197 in words is "forty trillion, four hundred fifty-one billion, two hundred thirteen million, two hundred thirty-four thousand, one hundred ninety-seven".