3956311424509 has 2 divisors, whose sum is σ = 3956311424510. Its totient is φ = 3956311424508.

The previous prime is 3956311424453. The next prime is 3956311424581. The reversal of 3956311424509 is 9054241136593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3952342802500 + 3968622009 = 1988050^2 + 62997^2 .

It is a cyclic number.

It is not a de Polignac number, because 3956311424509 - 2¹⁵ = 3956311391741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3956311424309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978155712254 + 1978155712255.

It is an arithmetic number, because the mean of its divisors is an integer number (1978155712255).

Almost surely, 2^{3956311424509} is an apocalyptic number.

It is an amenable number.

3956311424509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956311424509 is an equidigital number, since it uses as much as digits as its factorization.

3956311424509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 52.

The spelling of 3956311424509 in words is "three trillion, nine hundred fifty-six billion, three hundred eleven million, four hundred twenty-four thousand, five hundred nine".