75076849409 has 2 divisors, whose sum is σ = 75076849410. Its totient is φ = 75076849408.

The previous prime is 75076849399. The next prime is 75076849427. The reversal of 75076849409 is 90494867057.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49106560000 + 25970289409 = 221600^2 + 161153^2 .

It is a cyclic number.

It is not a de Polignac number, because 75076849409 - 2⁸ = 75076849153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75076849439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37538424704 + 37538424705.

It is an arithmetic number, because the mean of its divisors is an integer number (37538424705).

Almost surely, 2^75076849409 is an apocalyptic number.

It is an amenable number.

75076849409 is a deficient number, since it is larger than the sum of its proper divisors (1).

75076849409 is an equidigital number, since it uses as much as digits as its factorization.

75076849409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 75076849409 in words is "seventy-five billion, seventy-six million, eight hundred forty-nine thousand, four hundred nine".