40408764727 has 2 divisors, whose sum is σ = 40408764728. Its totient is φ = 40408764726.

The previous prime is 40408764667. The next prime is 40408764733. The reversal of 40408764727 is 72746780404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40408764727 - 2¹¹ = 40408762679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40408764757) 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, 20204382363 + 20204382364.

It is an arithmetic number, because the mean of its divisors is an integer number (20204382364).

Almost surely, 2^40408764727 is an apocalyptic number.

40408764727 is a deficient number, since it is larger than the sum of its proper divisors (1).

40408764727 is an equidigital number, since it uses as much as digits as its factorization.

40408764727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 40408764727 in words is "forty billion, four hundred eight million, seven hundred sixty-four thousand, seven hundred twenty-seven".