40404104263 has 2 divisors, whose sum is σ = 40404104264. Its totient is φ = 40404104262.

The previous prime is 40404104243. The next prime is 40404104317. The reversal of 40404104263 is 36240140404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40404104263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404104243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202052131 + 20202052132.

It is an arithmetic number, because the mean of its divisors is an integer number (20202052132).

Almost surely, 2^40404104263 is an apocalyptic number.

40404104263 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404104263 is an equidigital number, since it uses as much as digits as its factorization.

40404104263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40404104263 its reverse (36240140404), we get a palindrome (76644244667).

The spelling of 40404104263 in words is "forty billion, four hundred four million, one hundred four thousand, two hundred sixty-three".