40809558463 has 2 divisors, whose sum is σ = 40809558464. Its totient is φ = 40809558462.

The previous prime is 40809558397. The next prime is 40809558473. The reversal of 40809558463 is 36485590804.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40809558463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40809558463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40809558473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20404779231 + 20404779232.

It is an arithmetic number, because the mean of its divisors is an integer number (20404779232).

Almost surely, 2^40809558463 is an apocalyptic number.

40809558463 is a deficient number, since it is larger than the sum of its proper divisors (1).

40809558463 is an equidigital number, since it uses as much as digits as its factorization.

40809558463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 40809558463 in words is "forty billion, eight hundred nine million, five hundred fifty-eight thousand, four hundred sixty-three".