7699731475409 has 2 divisors, whose sum is σ = 7699731475410. Its totient is φ = 7699731475408.

The previous prime is 7699731475393. The next prime is 7699731475439. The reversal of 7699731475409 is 9045741379967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6852337583809 + 847393891600 = 2617697^2 + 920540^2 .

It is a cyclic number.

It is not a de Polignac number, because 7699731475409 - 2⁴ = 7699731475393 is a prime.

It is not a weakly prime, because it can be changed into another prime (7699731475439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3849865737704 + 3849865737705.

It is an arithmetic number, because the mean of its divisors is an integer number (3849865737705).

Almost surely, 2^{7699731475409} is an apocalyptic number.

It is an amenable number.

7699731475409 is a deficient number, since it is larger than the sum of its proper divisors (1).

7699731475409 is an equidigital number, since it uses as much as digits as its factorization.

7699731475409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360067680, while the sum is 71.

The spelling of 7699731475409 in words is "seven trillion, six hundred ninety-nine billion, seven hundred thirty-one million, four hundred seventy-five thousand, four hundred nine".