40235021645263 has 2 divisors, whose sum is σ = 40235021645264. Its totient is φ = 40235021645262.

The previous prime is 40235021645179. The next prime is 40235021645279. The reversal of 40235021645263 is 36254612053204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40235021645263 - 2¹³ = 40235021637071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40235021645293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117510822631 + 20117510822632.

It is an arithmetic number, because the mean of its divisors is an integer number (20117510822632).

Almost surely, 2^{40235021645263} is an apocalyptic number.

40235021645263 is a deficient number, since it is larger than the sum of its proper divisors (1).

40235021645263 is an equidigital number, since it uses as much as digits as its factorization.

40235021645263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 40235021645263 its reverse (36254612053204), we get a palindrome (76489633698467).

The spelling of 40235021645263 in words is "forty trillion, two hundred thirty-five billion, twenty-one million, six hundred forty-five thousand, two hundred sixty-three".